Entries by Hannah Wangui

A random sample of fifty-five 200-meter

Question A random sample of fifty-five 200-meter swims has a mean time of 3.91 minutes and the population standard deviation is 0.07 minutes. Construct a 90% confidence interval for the population mean time. Interpret the results. The 90% confidence interval is:   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon […]

 

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Find the critical value zc necessary to form a confidence

Question Find the critical value zc necessary to form a confidence interference at the level of confidence shown below. c=0.81   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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Test the claim about the population​ mean,

Question Test the claim about the population​ mean, μ​, at the given level of significance using the given sample statistics. ​Claim: μ=50​; α=0.01​; σ=3.21 Sample​ statistics: x=49.3 n=58 a)Identify the null and alternative hypotheses b)Calculate the standardized test statistic. (round two decimal places) c)Determine the critical​ value(s) d)Determine the outcome and conclusion of the test (Reject or Fail […]

 

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