Construct the indicated confidence interval for the population mean muμusing the t-distribution c=0.95,x=14.1, s=2.0 n=7 Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”
In a random sample of 23 people, the mean commute time to work was 30.6 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results Looking for a Similar […]
A researcher wishes to estimate, with 99%confidence, the population proportion of adults who are confident with their country’s banking system. His estimate must be accurate within 2%of the population proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 26%of […]
A researcher wishes to estimate, with 95%confidence, the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within 4%of the population proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that […]
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