The test statistic of z=−1.69 is obtained when testing the claim that p=1/2. a. Using a significance level of α=0.05​, find the critical​ value(s). b. Should we reject H0 or should we fail to reject H0​?

The test statistic of z=−2.31 is obtained when testing the claim that p=1/2.   a. Using a significance level of α=0.05​,find the critical​ value(s). b. Should we reject H0 or should we fail to reject H0​?

The test statistic of z=−2.80 is obtained when testing the claim that p<0.47. a. Using a significance level of α=0.05​, find the critical​ value(s). b. Should we reject H0 or should we fail to reject H0​?

The test statistic of z=−1.83 is obtained when testing the claim that p<0.49. a. Using a significance level of α=0.01​, find the critical​ value(s). b. Should we reject H0 or should we fail to reject H0​?

The test statistic of z equals=−2.49 is obtained when testing the claim that p <0.58. a. Using a significance level of α=0.05​,find the critical​ value(s). b. Should we reject H0 or should we fail to reject H0​?

The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2019 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2019 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?

The test statistic of z=−2.97 is obtained when testing the claim that p=3/5.   a. Using a significance level of a=0.10, find the critical​ value(s).   b. Should we reject H 0or should we fail to reject H 0​?

The test statistic of z=−2.15 is obtained when testing the claim that p=4/7. a. Using a significance level of α=0.01​, find the critical​ value(s). b. Should we reject H0 or should we fail to reject H0​?

An investigator wants to test the claim that there is no difference of a new weight loss medication at reducing BMI. The following table represents the results of individuals enrolled. Assume normal approximation is acceptable. (α=1)   Pt Pre test BMI Post test BMI a 30.5 36.5 b 32.8 28.3 c 35.6 28.2 d 34.7 27.9 e 30.1 28.5 1. Write out your null alternative hypotheses H0:µd=, Ha: µd≠  2. Calculate a t stat  3. What is the t-crit=±? 4. P-value = 5. do you reject or fail to reject null hypthosis? 6. Construct a 99% confidence interval and provide an interpretation. Does your interval further support your decision in the hypothesis test above

The test statistic of z= -1.90 is obtained when testing the claim that p<0.26. a. Using a significance level of a=0.01​, find the critical​ value(s). b. Should we reject Upper H 0 or should we fail to reject Upper H 0​?