A bank received on average 8 bad cheques per day. What is the probability that the bank will receive 4 bad cheques on any given day. Hint: Use poisson distribution

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Answer  Given               50c          60c             70c              31            26…

Q: Salaries of Government Employees The mean salary of federal government employees on the General…

A: The mean salary of federal government employees on the General Schedule is $59,593. The average…

Q: -(True or false) One of the Characteristic of a continuous random variables is “Probabilities are…

A: For the given statements, we need to tell if the given statements are True or False.

Q: In each of the following cases, determine whether the sample size n is large enough to use the large…

A: (a)  p^=0.1, n=30 (b)p^=0.1,n=100 (C)p^=0.5, n=50

Q: Independent samples of size n₁ = 25 and n₂ = 36 are taken from two normal populations with known…

A: The given values are n1=25,n2=36,x¯1=13.6,x¯1=19.2 and σ1=5.5,σ2=4.2.

Q: A contingency table has 6 rows and 8 columns What is the value of degrees of freedom

A: No. of rows(r)=6No. of columns(c)=8 We have to find the value of the degree of freedom.

Q: The following data represent crime rates per 1000 population for a random sample of 46 Denver…

A: Given data, 63.2 36.3 26.2 53.2 65.3 32.0 65.0 66.3 68.9 35.2 25.1 32.5 54.0 42.4 77.5 123.2 66.3…

Q: A random sample of students at Boatsville College was surveyed. Two of the questions on the survey…

A: The formula to find the Expected frequency is,

Q: A weight-loss clinic advertised that last month its patients, on average, lost 6 lb. Assuming that…

A: It is required to choose the correct statement(s).

Q: The following data represent crime rates per 1000 population for a random sample of 46 Denver…

A: We have given the data representing crime rates per 1000 population for a random sample of 46 Denver…

Q: A 138.

A: Probability is the method used to obtain the chance of an event happening. It never takes negative…

Q: Assume that a recent survey suggests that about 88​% of computers use a new operating system.

A: The proportion is about 88​% of computers use a new operating system.

Q: The following ages were collected from a sample of study participants. Which one of these ages is…

A: Data  20, 18, 22, 25, 24, 19, 21, 23, 27, 22, 101, 25, 20

Q: Student Expenditures The average expenditure per student (based on average daily attendance) for a…

A: According to the given information in this question There are more than three subparts according to…

Q: 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 data

A: The five number summary of a set of data that consist of  i) The minimum ii) First quartile(Q1) iii)…

Q: MULTILINEAR REGRESSION: 1) The table shows the distribution of weight, height and age for a sample…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: Suppose that X is a normal random variable with a mean of μ = 140 and a standard deviation of a =…

A: Mean=140, Standard deviation=10

Q: lower confidence limit (LCL) and upper confidence limit (UCL) of the mean for each of the = 241,…

A: a) 95% confidence level  b) 99% confidence level

Q: Develop a scatter diagram with the number of cars in service as the independent variable. What does…

A: Note: Hi there! Thank you for posting the questions. As there are multiple sub parts, according to…

Q: (f) Would it be unusual if less than 38% of the sampled teenagers owned smartphones? It (Choose one)…

A: Suppose p is the true population proportion of teenagers aged 12-17 who own smartphones.

Q: A researcher believes that the mean earnings of top-paid actors, athletes and musicians are the…

A: Here we’ve to compare 3 group means so we use ANOVA. Let A represents group of Actor, B represents…

Q: Scores on a standardized exam are known to follow a normal distribution with standard deviation o =…

A: From the provided information, Sample size (n) = 75 Sample mean (x̅) = 73.4 Population standard…

Q: The Crown Botting Company has just installed a new bottling process that will fill 16-ounce bottles…

A:

Q: Lynn University wants to examine whether students display better academic performance in class…

A: In Class GPA Online GPA 4.0 4.0 3.5 2.2 3.7 3.3 3.5 3.7 2.0 2.5 3.2 3.8 3.3 3.8

Q: A poll reported that only 507 out of a total of 1809 adults in a particular region said they had a​…

A: The sampled no. of adults, i.e., the sample size, n=1809. The no. of sampled adults who expressed a…

Q: The income of males in each state of the United States, including the District of Columbia and…

A: We need to find the 99% confidence interval for the difference in incomes between males and females…

Q: Find the probability of the given event:- Event: Drawing a jack card randomly from a well…

A: Answer: Using the given data, Given event is, Drawing a jack card randomly from a well shuffled deck…

Q: Test the following claims. This process should include each step outlined in the text: From a…

A: The question is about hypo. testing Given : Randomly selected no. of bod temp. ( n ) = 26 Sample…

Q: est the claim at 1% significance that the literacy rate in Japan is higher than the U.S. literacy…

A: The literacy rate is defined to be the proportion of people over 15 years of age who can read. The…

Q: P(78<x<84)= (Round to four decimal places as needed.) CHESCICCAR

A: Let  X be the random variable from normal distribution with mean (μ) = 89 and standard deviation (σ)…

Q: e shape of the distribution of the time required to get an oil change at a 10-minute oil-change…

A: The shape of the distribution of the time required to get an oil change at a 10-minute oil-change…

Q: ) What is the P- value and Z score? d) Does it Reject/ Accept the null hypothesis H_0?

A: sample mean = 551 sample size = 18 population standard deviation = 118  claim : SAT score in 2019 is…

Q: Customers enter the camera department of a store at the average rate of five per hour. The…

A: Customers enter the camera department of a store at the average rate of five per hour. The…

Q: An experiment was conducted to study the extrusion process of biodegradable packaging foam. Two of…

A: This question is about an experiment that was conducted to study the extrusion process of…

Q: Because npo (1-Po) = 85.3 > 10, the sample size is less than 5% of the population size, and the…

A: It is given that  p = 58% = 0.58 Favourable cases, X = 207 Sample size, n = 350

Q: It currently takes users a mean of 44 minutes to install the most popular computer program made by…

A: Hypothesized mean µ = 44 minutes Sample size (n) = 51 Mean x̅ = 47.8 minutes Standard deviation (s)…

Q: A restaurant manager wants to know if one of the three specials on the menu (baked fish, roast beef,…

A: From the given information, the total number of orders is 52+42+29=123.

Q: Identify the type I error and the type II error that corresponds to the given hypothesis. The…

A: Answer  Given  The proportion of people who write with their left hand is equal to 0.34. Type1 error…

Q: Suppose that 20% of the people in a large city have used a hospital emergency room in the past year.…

A: n=120p=0.20mean(μ)=npmean(μ)=120×0.20mean(μ)=24Standard deviation(σ)=np(1-p)Standard…

Q: The owner of Britten's Egg Farm wants to estimate the mean number of eggs produced per chicken. A…

A: The range where the parameter lies are estimated using the confidence interval. It varies based on…

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: X~bin(n=30, p=0.95)

Q: Thirty-eight different video games showing violence were observed. The duration times of violence…

A: Here, 38 different video games and population mean is greater than 81.

Q: A car-rental company is interested in the amount of time its vehicles are out of operation for…

A: We have given that,  The data set are:- 22, 23, 26, 19, 5, 15, 10, 17, 12, 18

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A:

Q: A random sample of size n = 4 taken from a normal population with σ 2 = 9 is used to test H0 : µ =…

A: Sample size: n=4 Population variance: σ2=9 Null hypothesis: H0:μ=μ0 Alternative hypothesis: H1:μ=μ1…

Q: Use Table V in Appendix A to determine the t-percentile that is required to construct each of the…

A: a) Confidence level=95%, degree of freedom=16 b) Confidence level=95%, degree of freedom=24 c)…

Q: I looked if the points scored per season is best indicator for wins in regular season. Points…

A: In this step, we note down all the information given in the question and prepare the background for…

Q: The Crown Bottling Company has just installed a new bottling process that will fill 16-ounce bottles…

A: Null hypothesis: The mean bottle fill of Crown Classic Cola soft drink is equal to 16 ounces.…

Q: In a left tailed hypothesis test where you reject H0 only in the lower tail, What is the p-value if…

A: The test is left tailed test and value of test statistic is  z = -1.88

Q: When she was 9 years of age, a girl did a science fair experiment in which she tested professional…

A: From the provided information, n = 277x = 121α = 0.05claim : p = 0.5p^ = xn = 121277 = 0.4368