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  3. h0: u >= 20 ha: u< 20 a sample of 50 provide

H0: u >= 20 Ha: u< 20 A sample of 50 provided a sample mean of 19.6....

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Basic Math

H0: u >= 20

Ha: u< 20

A sample of 50 provided a sample mean of 19.6. The populationstandard deviation is 1.4.

a. Compute the value of the test statistic (to 2 decimals).

b. What is the p-value (to 3 decimals)?

c. Using = .05, can it be concluded that the population mean isless than 20, Yes or no

d. Using = .05, what is the critical value for the teststatistic?

e. State the rejection rule: Reject H0 if z is (select, >=,>, <=, <, =, or not = ) the critical value

f. Using = .05, can it be concluded that the population mean isless than 20? Yes or No

Answer & Explanation Solved by verified expert
3.7 Ratings (561 Votes)
a Compute the value of the test statistic to 2 decimals The test statistic formula is given as below Z Xbar sqrtn We are given Xbar 196 20 14 n 50 005 Z 196 2014sqrt50 Z 04 019799 Z 202031    See Answer
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