Entries by Grace Wahito

The table to the right shows the results of a survey in which 2587adults from Country A,

February 28, 2020 in /by

The table to the right shows the results of a survey in which 2587adults from Country A,  1109 adults from Country B, and 1050 adults from Country C were asked if human activity contributes to global warming. Complete parts Construct a 90% confidence interval for the proportion of adults from Country Upper B CountryB  who say human activity […]

 

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"

Q12- A researcher wishes to estimate, with 99% confidence

February 28, 2020 in /by

Q12- 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 3%  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 […]

 

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"

In a random sample of 17 people, the mean commute time to work was 31.2 minutes

February 28, 2020 in /by

In a random sample of 17 people, the mean commute time to work was 31.2  minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean muμ. What is the margin of error of muμ? Interpret the results  ATTACHMENT PREVIEW Download attachment   Looking […]

 

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"

In a survey of 3033 adults,1450 say they have started paying bills online

February 28, 2020 in /by

In a survey of 3033 adults,1450 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. A 99% confidence interval for the population proportion is? _____,_____ ATTACHMENT PREVIEW Download attachment   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"