QUESTION 3 What would be the margin of error, E, for a 99% confidence interval created around a sample mean that has a standard error of 0.032? O 0.0410 O 0.0526 O 0.0627 O 0.0824

Q: A survey of women who are the main meal preparers in their households reported that 80% know that…

A: From the provided information, A survey of women who are the main meal preparers in their households…

Q: The minimum sample size needed to construct a 95% confidence interval for u, with error not…

A: formula for the sample size needed to estimate a population mean is

Q: A 95% confidence interval for a population mean was reported to be 148.69 to 155.31. If σ = 15, what…

A: given data 95% ci for mean : (148.69,155.31)σ = 15n = ?

Q: Express the confidence interval (44.5 % , 55.1 % ) in the form of p ± E.

A: Given confidence interval is Lower limit=44.5 Upper limit=55.1   Express in form of p±E

Q: A random sample of 40 customers has an average order size of $78.25, and a population standard…

A: Given: Sample size = 40 Sample mean = 78.25 population standard deviation =22.50.  95% confidence…

Q: are vegetarian is 0.078. Find the margin of error for a 99% confidence interval.

A: Here given, A researcher wishes to estimate the proportion of adults in the city of Hawalli who are…

Q: 17.    A hypothesis test of ?0: ?1 = ??2 versus ?1: ??1 ≠ ?2 produces a p-value of .057.  Which of…

A: The objective of this question is to determine the correct 95% confidence interval for the…

Q: Determine the sample size necessary to construct a 90% confidence interval with an error of 0.1 if…

A: Critical value: Using Excel formula “=NORM.S.INV(1-(0.1/2))”, the critical value for 90% confidence…

Q: Form a 90% confidence interval on the difference in the means. population std dev group mean 6.

A: Given,    Group n Mean Population standard  deviation 1 30 20.5 1.5 2 30 14.5 1.5

Q: What is the z value for a 94.8% confidence interval estimation? O 1.63 O 1.64 O 1.94 O 1.96

A: Confidence level=94.8%

Q: Question 1 In a test of weight loss programs, 40 adults used a new weight loss product. After a…

A:

Q: Suppose we were not told that 20% of M&Ms are blue by the company, but instead want to estimate this…

A:

Q: A sample of size ? = 14 has a sample mean ?̅= 11.9 and sample standard deviation ? = 2.1. It is…

A: Given that  sample of size= 14  sample mean = 11.9 and sample standard deviation =2.1.

Q: QUESTION 14 Suppose you want to create a confidence interval for the number of almonds contained in…

A:

Q: A random sample of size 49 from normal population yields, mean = 58.6 and standard deviation = 15.2.…

A: The confidence interval is the range of intervals in which the true value of the population…

Q: The mean amount of the 812 mortgages taken out in a city in the past year must be estimated. Based…

A: Given : Population S.D (σ) = 20000 Confidence Level = 95% Margin of error (E) = 2000

Q: Assuming that a sample (N = 504) has a sample standard deviation of 2.26, what is the upper bound of…

A: Sample mean = x̅ = 2.96 Sample size = n = 504 Sample S.D = s = 2.26

Q: In a sample of 5 courses with no support course the average final of 200 students was 70% with a…

A: Question 1 Given, sample size (n)  = 200 standard deviation (σ) = 10 sample mean (x̄)  = 70…

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: Which one of these is the best interpretation of the 80% confidence level for the mean sugar col of…

A: It is given that the confidence interval is 17.9mm and 27.1 mm.

Q: Find the critical value zn needed to construct a(n) 98.5% confidence interval. 'a/2 O 2.43 O 2.17 O…

A: From the provided information, Confidence level = 98.5% Level of significance (α) = 1 – 0.985 =…

Q: Which of the following factors affect(s) the width of the confidence interval? Sample size. Sample…

A: Confidence interval: CI=sample mean±t1-confidence level2, dfsample varaincesample size Here,…

Q: popu the Francisco Bay. The random sample we select has a mean of 629 parts per million and a…

A: Solution: Given information: x = 629 ppm   Sample mean s = 54 ppm Sample stadnard deviation

Q: In what are we confident after we’ve calculated a 95% confidence interval – the value of that…

A: still wrong. The 95% is not for the construction of the interval, but for the method of constructing…

Q: Using the SPSS output above, what is the 95% confidence interval for 3₁? 2.331 (-23.508, 11.128)…

A: Here, the independent variable is the temperature of natural habitat (x) and the dependent variable…

Q: Problem 1. For a normal population with known variance o?, what is the confidence level for the…

A:

Q: The time spent, in minutes, on physical activities per day was recorded for a sample of college…

A: Note- Since you have posted multiple questions, as per our guidelines we are supposed to answer only…

Q: In a random sample of 1771 Americans aged 12 to 19, 19.5% had some hearing loss.  The standard error…

A: From the provided information, Confidence level = 99%

Q: Question 3 What is the smallest sample size that guarantees that the margin of error is less than 4%…

A: Give that the margin of error is 4% with 91% confidence interval. We need to find the smallest…

Q: Suppose it is known that approximately 30% of households own a sin- gle TV. Use this to obtain the…

A: From the provided information, The proportion of household own a single TV (p) = 0.30 Margin of…

Q: Suppose we take a random sample, N = 64, from the Texas population of adults and find that the…

A: It is given that, Sample size, n=64 x̅=14 and σ=4 We have, Z0.05/2 = 1.96 We can find 95% confident…

Q: Question 3 SS = 340.700, s, 1.951,9 = 12.45 + 6.32x The information above is obtained from a sample…

A: The below is the formula for constructing the confidence interval of True slope B                C.I…

Q: You want to check if the required sample size your accuntant used is big enough. Calculate the…

A: here MOE  = 3 z-critical for 99% confidence level = 2.576 here area in both tail (1 -.99) /2 = 0.005…

Q: Question 9 Assume that a sample is used to estimate a population proportion p. Find the 99.9%…

A:

Q: roportion of adults in the city of Hawalli who are vegetarian. In a random sample of 13 adults from…

A: We have given that,  Sample size (n) = 713 and sample proportion (p̂) = 0.078 Then,  We will find…

Q: A sample of size n=15 has sample mean "x"=2.1 and sample standard deviation s=1.7. A. Construct a…

A: Given Datan = 15mean µ = 2.1sample standard deviation, s = 1.7 A)95% confidence interval for the…

Q: You randomly select a sample of n = 12. What is the appropriate value for t to compute a 99%…

A:

Q: A researcher constructs a two-sided 99% confidence interval (CI) on the mean of a normal…

A: decrease by a factor of approximately 0.64

Q: Obesity is defined as a body mass index (BMI) of30 /kgm2or more. A99%confidence interval for the…

A: Solution: From the given information, a 99% confidence interval for the percentage of U.S. women…

Q: In a random sample of 121 observations, p = 0.8. What is the 95% confidence interval for p? 0.64 to…

A:

Q: Here are summary statistics for randomly selected weights of newborn girls, n= 244, x= 29.7 hg, s=76…

A:

Q: Construct the confidence interval for the population mean c=0.98 X=9.5 o=0.5 n=54

A: Given:  mean c=0.98  X bar=9.5  o=0.5 n=54 A=1-0.98=0.02

Q: I want to know what percent of these coffee shops sell espresso. Out of the 150 I sampled, only 40…

A: Given sample size(n)=150x=40confidence level=90%

Q: A given poll states "54% of fifth graders read at or above the fifth-grade-level." If there is a…

A: According to the given information it is required to compute the 95% confidence interval for the…

Q: Suppose that a random sample of 11 scores from a population of test scores is to be used to estimate…

A: Chebyshev's rule and empirical rule and related to the proportion of data that falls with different…