A car insurance company wanted information about the age of its customers. From a sample of 104 randomly selected customers the mean is 36.1 years and a standard deviation is 14.3 years. Find the lower confidence limit (LCL) of the 98% confidence interval for the population mean age. Round your answer to three decinal places.

Q: A researcher believes that about 75% of the seeds planted with the aid of a new chemical fertilizer…

A: Given,p=0.75n=105mean(μ)=npmean(μ)=105×0.75=78.75Standard deviation(σ)=np(1-p)Standard…

Q: The pmf of a discrete random variable is as follows: X -1 0 1 2 3 f(x) 1/13 2/13 5/13 3/13…

A:

Q: QUESTION 8 Assume higher frequency of dietary supplement use is correlated with lower systolic blood…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Find the probability of the indicated event if P(E) = 0.35 and P(F) = 0.50. Find P(E or F) if P(E…

A: given data P(E) = 0.35P(F) = 0.50P(E∩F) = 0.20P(E∪F) = ?

Q: The table shows data on the average annual global temperatures for the years between 1994 and 2014…

A: The question is about regression Given :   To find : 1 ) Scatter plot 2 ) Pred. avg. temperature…

Q: QUESTION 23 A journal article reports that a random sample of 22 antivirus software packages was…

A: n=22df=n-1=22-1=21CI=0.97α=1-0.97=0.03CI, (191,294)here confidence interval find by using  t-…

Q: In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the…

A: Given  Total ticket=10 Prizes+ 25 blanks =35  Probability  Probability may be defined as the ratio…

Q: Suppose you are comparing eight groups in an ANOVA, and your result is significant. You want to…

A: In the given situation, there are 8 comparison groups. Number of pairwise comparisons =[(number of…

Q: Earlier this semester, we learned to use 2-Sample-TTest to compare the population means of two…

A: Given The data is as follows: Treatment One Treatment Two 5.6 3.4 4.7 2.3 3.6 4.4 3.9 3.5…

Q: Suppose students' ages follow a right skewed distribution with a mean of 21 years old and a standard…

A:

Q: Find the margin of error for the given values of c, s, and n. c = 0.90, s = 3.6, n = 18 Click the…

A: GIVEN DATA, c=0.90s=3.6n=18df=n-1=18-1=17margin of error: E=?

Q: ← A golf ball is selected at random from a golf bag. If the golf bag contains 9 orange balls, 6…

A: select golf ball at random.  9 orange balls 6 black balls 5 red balls _________________ 20 total…

Q: Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company…

A: given data, n=10023% of them candies are bluep(blue) =0.23claim: p=0.21

Q: A random number generator picks a number from 6 to 65 in a uniform manner. Round answers to 4…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Use the data on the nonconformances for a period of 10 days to complete (a) through (c). Day Sample…

A: Day Sample Size Non-conformances 1 150 8 2 150 14 3 150 6 4 150 15 5 150 20 6 150 15 7…

Q: In one study of smokers who tried to quit smoking with nicotine patch therapy, 36 were smoking one…

A: Given X=36 n=30+36

Q: A baseball player hit 61 home runs in a season. Of the 61 home runs, 24 went to right field, 17 went…

A: given data, 24-went right feild 17-right center11-center feild 08- left center feild 01-left feild…

Q: You wish to test the following claim (Ha) at a significance level of a Ho: P₁ = P2 Ha: P1 P2 You…

A: The question is about hypo. testing Given : No. of successes in sample drawn from popl. 1 ( x1 ) =…

Q: Find the mean, median and mode of the following temperature data: Class               Frequency…

A: Given  temperature data table

Q: A standard deck of cards contains 52 cards. One card is selected from the deck. (a) Compute the…

A: GivenTotal no.of cards in a deck = 52

Q: A sample of values taken from a normally distributed population are 6.8, 7.2, 5.4, 8.8 and 10.2. If…

A: Given data is 6.8,7.2,5.4,8.8,10.2sample size(n)=5population standard deviation(σ)=2.1

Q: Commuters A recent random survey of 105 individuals in Michigan found that 82 drove to work alone. A…

A: Given data: Confidence level = 90% Michigan survey: x = 82 and n = 105 New York survey: x = 58 n =…

Q: The probability density function of a random variable, X, is: fx(x)=(8x-x4) 0≤x≤2 Determine the…

A:

Q: The following three independent random samples are obtained from three normally distributed…

A: Work study vs. Co-op: Given information: x¯1=12.942, s1=0.3246, n1=15x¯2=14.145, s2=1.751, n2=24…

Q: It is estimated that 10% of the steel bolts produced at a factory are defective. Tests, carried out…

A: Given,n=5p=0.1q=1-0.1q=0.9Let X is the number of faulty bolts found in a sample groupof five bolts .

Q: Define nth Moments about Origin

A: In probability theory, moments about origin refers to the raw moments.  From various moments of a…

Q: The following three independent random samples are obtained from three normally distributed…

A: Work study vs. Co-op: Given information:

Q: Pearson correlation coefficient is calculated for 38 individuals. What value is df should be used to…

A: given data  pearson correlation coefficient n = 38 df = ?

Q: Suppose that the mean score of a class of 34 students was 78. The 19 male students in the class had…

A: Basic formulas for mean has applied.

Q: Determine C given: C= - c = [³ 4 3 -2 1 4 12 6 3 3 1 6 56 -4 3 25 8-95

A:

Q: Exercise 2 Find a finite sum giving the variance of the number of bottles of soda needed to obtain a…

A:

Q: A hospital administrator has the business objective of reducing the time to process patients'…

A: Given Information: Consider the given dataset: Day Discharged Patients Records_not_processed 1…

Q: At the local car shop, the amount of time required for an oil and filter change on an automobile is…

A: Formula has shown in the claculation.

Q: A company manager was told 35% of workers had COVID this year but the manager thought that was not…

A:

Q: A corporation that maintains a large fleet of company cars for the use of its sales staff is…

A: Given data: Sample size= 20 Confidence level = 90%

Q: Show all solution The Human Resources Department conducted a census to determine whether fear of…

A: Flyers Non flyers likely to fly Non flyers not likely to fly Total No anxiety 750 120 95 965 a…

Q: The table below gives the number of hours spent unsupervised each day as well as the overall grade…

A: Relationship between the independent and dependent variable explain using the regression equation.…

Q: Measured values of a variable X and of a variable Z are set out below. Variable X: 20 25 30 35 40…

A:

Q: A random sample of likely voters showed that 61% planned to vote for Candidate X, with a margin of…

A: Given data: proportion = 61 % = 0.61 Margin of error ( E ) = 3 % = 0.03 Confidence level = 95 % =…

Q: An insurance company proposes two health insurance plans for the employees of a company. Plan A is…

A: Given information, A company has two health insurance plan for the employees as plan A and plan B.…

Q: A town believes that an average of 33 cars travel through an intersection each hour. A new worker…

A: Given data is 35,31,34,32,32,30,29sample size(n)=7significance level=1-0.94=0.06

Q: The figure plots the number of manatee deaths by boat versus the number of boats registered to…

A: The coefficient of determination essentially indicates the explained proportion of variation in the…

Q: (a) Identify the data set for which it is appropriate to use the Empirical Rule. It is appropriate…

A:

Q: Three unbiased the probability heads? coins are tossed. What is of getting at most two

A:

Q: A newspaper article reported that people spend a mean of 6.5 hours per day watching TV, with a…

A: Given,mean(μ)=6.5standard deviation(σ)=1.8

Q: A statistics professor finds that he can predict a student's grade on the final exam based on the…

A: The question above has asked about causal relationship b/w student's grade and his attendance based…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 335 tested subjects,…

A: given data clim : p <0.10n = 355x = 27α = 0.01p^ = xn = 27335 = 0.0806

Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 100…

A: It is given that the distribution of time taken follows normal distribution with mean 100 in and…

Q: QUESTION 28 Find the confidence level related to the critical value Za/2= -1.54. O 91.8% 99.5% 87.6%…

A: given data critical value Zα/2=-1.54confidence interval level is =?

Q: A genetic experiment involving peas yielded one sample of offspring consisting of 428 green peas and…

A: given data, 428- green peas 138- yellow peas 566- total peas claim:26% of offspring peas will be…