If you increase the sample size and confidence level at the same time, what will happen to the length of your confidence interval? OMake it bigger O Make it smaller O It will stay the same D Cannot be determined from the given information

Q: If n = 20, a = 48, and s = 8, construct a confidence interval %3D at a 80% confidence level. Assume…

A:

Q: If n-25, -46, and s-5, construct a confidence interval at a 95% confidence level. Assume the data…

A: Givenn=25x=46s=5confidence level = 95%

Q: If n = 15, 43, and s = 9, construct a confidence interval at a 98 % confidence level. Assume the…

A:

Q: Decreasing the sample size, while holding the confidence level the same, will do what to the length…

A: Introduction: Confidence interval is the interval estimate of the population parameter. It is the…

Q: If n = 16, = 46, and s = 17, construct a confidence interval at a 90% confidence level. Assume the…

A: Given n=16 X-bar=46 S=17

Q: If n=13, (x-bar)=D49, and s-13, construct a confidence interval at a 98% confidence level. Assume…

A: Given problem Given that   n = 13 x-bar = 49 s = 13 Degree of freedom, df = 13 - 1 Degree of…

Q: If n=14, (x-bar)=37, and s=7, construct a confidence interval at a 98% confidence level. Assume the…

A: Given,n=14x¯=37s=7degrees of freedom(df)=n-1df=14-1=13α=1-0.98=0.02α2=0.01t0.01(13)=2.650     (from…

Q: 1. Your colleague collected a sample of data regarding the mean length of a movie and they computed…

A: It has been given that the confidence interval of the mean length of a movie has been computed on a…

Q: If n = 24, = 47, and s = 10, construct a confidence interval at a 98% confidence level. Assume the…

A: Sample mean = 47Sample size = 24Sample standard deviation = 1098% confidence level

Q: If n=28, (x-bar)=30, and s=3, construct a confidence interval at a 80% confidence level. Assume the…

A: According to the given information, we have Sample size = 28Sample mean = 30Sample standard…

Q: If n = 16, 7 = 43, and s = 17, construct a confidence interval at a 98% confidence level. Assume the…

A:

Q: If n=13, (x-bar)=43, and s=7, construct a confidence interval at a 99% confidence level. Assume the…

A:

Q: Suppose we wish to decrease the width of the confidence interval for µ. What are two ways in which…

A: The c% confidence interval for population mean will signify that with c% confidence the population…

Q: A _________confidence interval would result from increase the sample size. (A) narrower (B) wider…

A: Solution: The confidence interval can be calculated by using the following formula:

Q: If n=22, ē(x-bar)=42, and s=19, construct a confidence interval at a 80% confidence level. Assume…

A: Solution: From the given information, n=22, x-bar=42 and s=19.

Q: If n = 28, a = 38, and s = 17, construct a confidence interval at a 99% confidence level. Assume the…

A: As given: n =28 x¯=38 s = 17 It is asked to construct a confidence interval at a 99% confidence…

Q: To decrease the width of a confidence interval, we should always prefer to: O lower the confidence…

A: The objective is to find what should always prefer to decrease the width of a confidence interval.

Q: If n=18, (x-bar)=D42, and s=8, construct a confidence interval at a 98% confidence level. Assume the…

A:

Q: If n=23, ¯xx¯(x-bar)=48, and s=2, construct a confidence interval at a 99% confidence level. Assume…

A: Solution-: Given: x¯=48,n=23,s=2,c=0.99 We construct C.I. at a 99% confidence level.

Q: 13, ¤(x-bar)=39, and s=16, construct a confidence interval at a 90% confidence level. Assume the…

A: From the given information, n=13 x-bar=39 s=16 Confidence level=90% Significance level=10%…

Q: If n=21, a(x-bar)=38, and s=2, construct a confidence interval at a 99% confidence level. Assume the…

A: Given: n= 21.0 , x̄= 38.0 s= 2.0 degree of freedom=n-1= 20.0 At 99.0 % confidence level with d.o.f.=…

Q: If n = 101, -47, and s = 16, construct a confidence interval at a 80% confidence level. Give your…

A: Given,   Sample size = 101 Sample mean = 47 Sample standard deviation = 16   Since the population…

Q: If n-31, (x-bar)=40, and s-5, construct a confidence interval at a 98% confidence level. Assume the…

A: Given that  Sample Mean \bar XXˉ = 4040 Sample Standard Deviation (s)(s) = 55 Sample Size…

Q: If n=16, (x-bar)=37, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: According to the given information, we haveSample mean = 37Sample standard deviation = 3Sample size…

Q: If n = 18, = 44, and s= 3, construct a confidence interval at a 98% confidence level. Assume the…

A:

Q: If n = 81, -45, and s to one decimal place. = 8, construct a confidence interval at a 90% confidence…

A:

Q: If n = 11, -48, and s = 8, construct a confidence interval at a 95% confidence level. Give your…

A: Given: Sample size n=11 Sample mean x¯=48 Sample standard deviation s=8

Q: If you want to be more confident that your confidence interval contains u, the confidence interval…

A: As the confidence level increases, length of the confidence interval also increases(wider).

Q: Suppose you compute a 96% confidence interval. What will happen to the confidence interval if you…

A: IF YOU DECREASE THE CONFIDENCE LEVEL FROM 96% T0 94%,DECREASES THE ERROR BOUND AND MAKES THE…

Q: In a survey conducted by CNN, 130 of the 250 people that were randomly surveyed have a savings…

A: Given data, n=250 x=130 Sample proportion p=x/n =130/250=0.52 z-value at 90% confidence is Zc=1.645

Q: error at a 80% confidence level Give your answer to two decimal places.

A: Given If n=22, x¯(x-bar)=35, s=7, 80% confidence level

Q: If n = 23, = 32, and s = 17, construct a confidence interval at a 90% confidence level. Assume the…

A:

Q: Western is studying ways to reduce the amount of time students spend in line to purchase coffee at…

A: Given  x̄=20, n=100, Moe=2 for 95%

Q: If n = 24 , overline x (x-bar)=40 , and s = 20 . construct a confidence interval at a 95% confidence…

A:

Q: If n=19, (x-bar)=41, and s=17, construct a confidence interval at a 99% confidence level. Assume the…

A: The provided information are: Sample size(n)=19Sample mean(x¯)=41Sample standard deviation…

Q: to What is your interpretation of the interval estimate? Select v more executives are predicting…

A: Here given full time employees proportion for current and previous year

Q: The margin of error of a confidence interval gets larger if the confidence level increases (assume…

A: Margin of error=MOE=Zα/2σnwhere Zα/2=Zcritical at cofidence level α

Q: If n 12, I = 40, and s = 16, construct a confidence interval at a 99% confidence level. Assume the…

A: Given Information Mean = 40 Standard Deviation = 16 Sample size (n) = 12

Q: If n=16, 7(x-bar)=38, and s=12, construct a confidence interval at a 99% confidence level. Assume…

A: Since population standard deviation is unknown, Use t-distribution to find t-critical value. Find…

Q: If n = 10, ¯xx¯ = 38, and s = 7, construct a confidence interval at a 99% confidence level. Assume…

A: Obtain the 99% confidence interval for the population mean. The 99% confidence interval for the…

Q: If n=20, ¯xx¯(x-bar)=43, and s=10, construct a confidence interval at a 98% confidence level. Assume…

A: Here we need to compute a 98% confidence interval from the given information. Given sample size=20…

Q: O neither one can be used O either one can be used Oz Ot B. When a 99% confidence interval is…

A: When the population standard deviation is known no matter what the sample size z distribution is…

Q: If n=21, ¤(x-bar)=39, and s=7, construct a confidence interval at a 99% confidence level. Assume the…

A: Sample mean =39Standard deviation = 7Sample size = 2199% confidence level

Q: If n = 20, i = 50, and s = 3, construct a confidence interval at a 95% confidence level. Assume the…

A: We have given that  Sample size n=20,  sample mean =50 , s=3 , and 95% confidence

Q: If n=22, 7(x-bar)=34, and s=17, construct a confidence interval at a 99% confidence level. Assume…

A: According to the given information, we have Sample size, n = 22 Sample mean = 34 Sample standard…

Q: construct a confidence interval at a 98% confidence level

A: Given that sample size n = 26, sample mean = 31 and sample SD s = 17 At 98% confidence level and df…

Q: If n=32, (x-bar)-D45, and s-15, construct a confidence interval at a 99% confidence level. Assume…

A: Given data, x=45s=15n=32α=0.01df=n-1=31t-critical value at α=0.01 and df=31 is tc=2.744

Q: Bob makes a 95% confidence interval with a random sample of 100 and his margin of error is plus or…

A: Here we need to choose from the correct option.

Q: If n=19, (x-bar)=35, and s=2, construct a confidence interval at a 99% confidence level. Assume the…

A:

Q: Other things being equal, the margin of error of a confidence interval increases as the a. sample…

A: The margin of error is defined as E = (Critical value) × Std. Error of estimate Note : Since you…