Determine the conclusion to the hypothesis test with a test statistic of 1.78 for two samples with known sigma (0) given Ho: MAHB = 0 vs H₁ μA - HB > 0 and 5% level of significance. Fail to reject the null hypothesis Reject the null hypothesis
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- Determine the conclusion to the hypothesis test with a test statistic of -1.98 for two samples with known sigma given H0: uA-uB=0 vs Ha: uA-uB<0 and a 1% level of significance. Should you reject the null hypothesis or fail to reject the null hypothesis? Why?Construct a 95 % confidence interval an experiment conducted by Ahad that found the sample mean temperature for a certain city in August was 101.82, with a population variance of 1.44. There were 6 samples in this experiment. The t value at 5% level is given by 2.571 for 5 df and 2.447 for 6 df. Also, give an example to explain null and alternate hypothesis.Determine the conclusion to the hypothesis test with a test statistic of 1.78 for two samples with known sigma given Null: uA-uB=0 vs. Alternative: uA-uB>0 and 5% level of significance. Should you reject or fail to reject null hypothesis?
- Let µj and µz represent the population means and let "= 2 A test will be made of the hypotheses Ho "a=0 versus 41 "a>0. Can you reject Ho at the a= 0.05 level of significance?Find the P-value for a left-tailed hypothesis test with a test statistic ofz= - 2.00. Decide whether to reject Ho if the level of significance is a = 0.10. P-value = (Round to four decimal places as needed.)Find P -value for the indicated hypothesis test with the given standardized test statistics, z. determine whether to reject H o for the given level of significance @ right tailed test with test statistics z=1.65 and @=0.02
- Previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 5% today. She randomly selects 155 pregnant mothers and finds that 6 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.1 level of significance. What are the null and alternative hypotheses? = versus H,: p Họ: P (Type integers or decimals. Do not round.)8.3.23-T Question Help Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. A safety administration conducted crash tests of child booster seats for cars. Listed below are results from those tests, with the measurements given in hic (standard head injury condition units). The safety requirement is that the hic measurement should be less than 1000 hic. Use a 0.05 significance level to test the claim that the sample is from a population with a mean less than 1000 hic. Do the results suggest that all of the child booster seats meet the specified requirement? 737 723 1159 652 607 688 D What are the hypotheses? A. Ho: µ = 1000 hic H1: µ2 1000 hic В. Но: и 1000 hic < 1000 hic C. Ho: µ = 1000 hic H1: µ< 1000 hic H1:µ< Click to select your answer and then click Check Answer. 4 parts remaining…A random sample of 15 families representing three social classes has been observed for the frequency with which the parents administer physical punishment to the children over a period of a week. Are the differences significant? Use α = .05 and the five-step model to conduct your hypothesis test. Write a sentence or two interpreting your results. Working Class: 10,9,4,2,1 Middle Class: 11,10,5,2,0 Upper Class: 7,5,2,0,0
- A random sample of 146 recent donations at a certain blood bank reveals that 82 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. USE SALT State the appropriate null and alternative hypotheses. Ho: P = 0.40 Ha: P = 0.40 Ho: P = 0.40 Ha: p > 0.40 Ho: P = 0.40 Ha: p < 0.40 Ho: P = 0.40 Ha: P = 0.40 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) Z = P-value = State the conclusion in the problem context. O Do not reject the null hypothesis. There is not sufficient evidence to conclude that the percentage of type A donations differs from 40%. O Do not reject the null hypothesis. There is sufficient evidence to conclude that the percentage of type A donations differs from 40%. O Reject the null hypothesis.…The Batteries sheet of the Data Excel file shows the results of two random samples that measured the average number of minutes per charge for AA Lithium-ion (Li-ion) rechargeable batteries versus Nickel-Metal Hydride (NiMH) rechargeable batteries. Perform a hypothesis test using significance level (α) = 0.05 to determine if the true average number of minutes per charge for NiMH batteries is smaller than that for Li-ion batteries. Let:µLi-ion be the true average number of minutes per charge for Li-ion batteries µNiMH be the true average number of minutes per charge for NiMH batteries. t-Test: Two-Sample Assuming Unequal Variances NiMH Li-ion Mean 89.35714 95 Variance 3.93956 59.75 Observations 14 17 Hypothesized Mean Difference 0 df 19 t Stat -2.89621 P(T<=t) one-tail 0.004628 t Critical one-tail 1.729133 P(T<=t) two-tail 0.009255 t Critical two-tail 2.093024 Based on the…If we have a sample of size 100 from a population of rope with sample mean breaking strength of 1040 pounds with standard deviation 200 pounds and we wish to run a hypothesis test with this data to see if the population mean breaking strength differs from 1000 pounds, then what is the TYPE I ERROR?