99% confidence interval of a population proportion (0.63,0.85) What is the margin of error (round answer to 2 decimals)

Q: What is the probability that exactly 3 close too early.

A: 33% of the teenagers in a city think that shopping malls Close too early. 25 teenagers are randomly…

Q: . A 95% confidence interval for P1 - P2 given that P1 = 0.25 with n1 = 40 and P2 = 0.40 with n2 =…

A: Given 1) P1=0.25, P2=0.40, n1=40, n2=120 2)  x1 =45 in group 1 with size n1=71      x2 =56 in group…

Q: Consider the paired data: I 1.42 4.22 9.16 4.11 12.28 28.62 7.92 24.82 9.59 29.82 Find estimates for…

A: To find out the regression estimate, we need to perform Regression Analysis.  For this we will use…

Q: Several years ago, 41% of parents with children in grades K-12 were satisfied with the quality of…

A: We have given that.Sample size (n) = 1135 x = 468 Confidence level (c) = 0.90 Significance level (α)…

Q: Identify the rejection region for testing the hypotheses with a=0.01. Select the correct choice…

A: Let μ1 and μ2 be the mean no. of swims required by males and females respectively. Sample sizes (n1…

Q: The spotlight effect refers to overestimating the extent to which others notice your appearance or…

A: Sample size =36 Sample mean=1.8 SS=425  We have to find a...95% confidence interval for population…

Q: The life of light bulbs is distributed normally. the standard deviation of the lifetime is 28 hours…

A: Answer: From the given data, mean(μ) = 570 Standard deviation(σ) = 28 X = 606 X~Normal…

Q: Researchers conducting a study of 15 children with a diagnosis of ADHD wish to assess whether the…

A: The BMI of 15 children is given.

Q: A variety of experiments suggest that visual images interfere with visual perception. In one study,…

A: (a) The 95% confidence interval for the population mean difference score is obtained below as…

Q: The likelihood that a light bulb is defective is 6%, on a particular production line. Eight light…

A: Answer: From the given data, Let X: Defective light bulb P(Defective) = P = 6% = 0.06 Sample size…

Q: Researchers collected data on the numbers of hospital admissions resulting from motor vehicle…

A: The data regarding the number of hospital admissions related to motor cycle crashes is recorded for…

Q: The premiere of Game of Thrones' seventh season set a series record of 10.1 million viewers tuning…

A: To calculate the t-statistic for each episode, we need to perform a two-sample t-test assuming…

Q: Find the z score for the below data Mu= 23 Population standard deviation = 4 Individual…

A: Answer: Given that, Population mean μ = 23 Population standard deviation σ = 4

Q: Which of the following formulas gives a 99% confidence interval for the mean GPA of the professor's…

A: A professor was curious about her students' grade point averages. She took a random sample of 15…

Q: In a randomly selected group of people who bought compact cars, 204 were women and 264 were men.…

A: No.of women who bought compact cars=204No.of men who bought compact cars=264significance…

Q: their homes. Random samples of 11 days from Atlanta (Group 1) and 12 days from New Orleans (Group 2)…

A: Given Information: The random sample of size from Atlanta, n1=11 The random sample of size from…

Q: Question 12 Answer the following questions related to the following dendrogram. 1. Draw the nested…

A: Dendrogram :  It is the diagram which represents in a tree format which represents the arrangements…

Q: Determine the sample size needed to construct a 95 % confidence interval to estimate the population…

A: Given data P= 0.34 E= 0.06

Q: Consider the data set 2 6 3 5 1 9 Find the average (mean):  Find the median:

A: Data given 2 6 3 5 1 9

Q: The degree of freedom for a Chi-Squared test of a contingency table with 6 rows and 3 columns is…

A: Answer: From the given data, Number of rows (r) = 6 Number of columns (c) = 3

Q: A marketing specialist wants to estimate the average amount spent by visitors to an online…

A: In the field of marketing, it is crucial to understand the behavior of customers to design effective…

Q: 9. Summarize the results from an analysis (two-way ANOVA) performed on the below. Assume big…

A: According to the hypotheses and the graph, factor A1 has a significant main effect, but factor A2…

Q: Construct a 99​% confidence interval estimate of the mean net change in LDL cholesterol after the…

A: In a test of the effectiveness of garlic for lowering​ cholesterol, 47 subjects were treated with…

Q: Justin, age 50, has been awarded 1,250,000 in compensation for injuries due to an accident during…

A: Given that, Justin, age 50 has been awarded 1,250,000 in compensation for injuries due to an…

Q: A simple random sample of size n = 15 is drawn from a population that is normally distributed. The…

A:

Q: Use the standard normal table to find the z-score that corresponds to the cumulative area 0.9195. If…

A: Let Z be the random variable standard normal distribution with mean 0 and standard deviation 1.

Q: A set of 5 scores has SS = 20. If the scores are from a sample, the sample variance is ____. If the…

A: sample size (n) =5 SS = 20

Q: What is the Q3 value for BMI in the study?

A: Researchers conducting a study of 15 children with a diagnosis of ADHD wish to assess whether the…

Q: If n = 521 and (p - hat )= 0.32, find the margin of error at a 99% confidence level

A: Sample of size n=521  and  Sample proportion (p̂)=0.32  At 99% confidence level find margin of error…

Q: 12.2.5Truck Unloading Times A warehouse manager is interested in the possible improvements to labor…

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

Q: m is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of…

A: Solution: from given information claim: There has been an increase in the proportion of rooms…

Q: The number of wins in the past 30 seasons by the San Francisco Giants are as follows: {107, 77, 73,…

A: First class: 55-59. Class width=5 Minimum value=55 and Maximum value=107. Number of classes is…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many…

A:

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: program. The table below gives the amounts of weight loss, in pounds, for a random sample of 20 of…

A: Sample size n =20 x x2 18 324 18 324 15 225 9 81 17 289 19 361 8 64 20 400 11…

Q: The likelihood that a light bulb is defective is 5%, on a particular production line. Twelve light…

A: Answer: Using the given data, Let X denotes the number of defective light bulbs The probability of a…

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: The partial single-factor ANOVA table is given as follows: Source of Variation df Treatments 2 Error…

A: Solution-: We have following table: Source  of variation Degree of freedom Sum of squares Mean…

Q: Can I get an interpretation and a conclusion on this solution

A: The regression equation for the given data is: Temperature change = 0.667 + 0.108X1 + 0.226X2 +…

Q: researcher claims that 30% of individuals who take a particular type of drug will develop side…

A: Sample size n =264 Favorable cases x =67 Sample proportion p^=x/n  =67/264 =0.2538

Q: If n = 520 and ( p - hat )= 0.45, find the margin of error at a 95% confidence level

A:

Q: Less than 52% of people support legalizing gay marriage. Express the null and alternative hypotheses…

A: The claim is that less than 52% of people support legalizing gay marriage.

Q: (c) Find the probability that a randomly selected study participant's response was more than 8.…

A: We are given that the responses in a recent study on world happiness are normally distributed with…

Q: Do shoppers at the mall spend less money on average the day after Thanksgiving compared to the day…

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

Q: If the original claim is "The majority of student population are full time students.", then this is…

A: Proportion: The percentage of a population that falls into a certain category has been referred to…

Q: How do you complete part g for this question

A:

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: 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: Think about how close the line Y = -2X + 11 is to the sample points. Look at the graph and find each…

A: The sample data is, Student Name Course Hours 1 Freshman (1) 8 2 Sophomore (2) 8 3 Junior…

Q: The following are the heights and weights of the players of the Uniminuto micro soccer team. The…

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