Calculate the p-value for the following conditions and determine whether or not to reject the null...

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Calculate the p-value for the following conditions and determine whether or not to reject the null...

Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis.

a) one-tail (upper) test, z Subscript p=2.86, and alpha= 0.10

b) one-tail (lower) test, z Subscript p= -0.74, and alpha= 0.05

c) two-tail test, z Subscript p=-1.93, and alpha=0.05

d) two-tail test, z Subscript p=1.13, and alpha= 0.02

a) p-value=

(Round to four decimal places as needed.)

Determine whether or not to reject the null hypothesis. Choose the correct answer below.

A. Do not reject Upper H 0, since the p-value is less than the significance level alpha

.B. Reject Upper H 0 , since the p-value is greater than or equal to the significance level alpha.

C.Do not reject Upper H 0 , since the p-value is greater than or equal to the significance level alpha.

D. Reject Upper H 0, since the p-value is less than the significance level alpha.

b) p-value=

(Round to four decimal places as needed.)

Determine whether or not to reject the null hypothesis. Choose the correct answer below.

A. Reject Upper H 0 , since the p-value is less than the significance level alpha.

B.Do not reject Upper H 0 , since the p-value is greater than or equal to the significance level alpha.

C.Do not reject Upper H 0 , since the p-value is less than the significance level alpha.

D.Reject Upper H 0 , since the p-value is greater than or equal to the significance level alpha.

math Statistics-And-Probability

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Answer 1

Answer #1

The p values for the respective part of the question according to the Z scores and one or two tailed test hence,

a. At Z score 2.86 and at one tail test p value = 0.0021

Hence Conclusion

D. Reject the Ho , since p value is less than level of significance alpha.

b. Again at Z score = -0.74 , for one tailed test p value is 0.2297

Hence Conclusion:

B. Do not reject Ho since the p value is greater than significance level alpha.

c. Now at Z =-1.93 and for two tailed test the p value will be 0.0536

And alpha= 0.05 hence Conclusion:

B. Do not reject the Ho since P value is greater than the level of significance , alpha =0.05

d. Again At Z=1.13 and for two tailed test p value = 0.2585

Conclusion

B. Do not reject the Ho since the p value is greater than level of significance alpha =0.02

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Answer 2

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