A hypothesis test of the null hypothesis μ-135 yields a z-test statistic of 1.05. What is the p-value for this test? Enter your answer as a decimal rounded to four places. p-value

What is the F value?  Is the null hypothesis rejected or not rejected? Draw Conclusion.

You are playing a dice game with a friend and become suspicious that he is using weighted dice. So you stop the game, take one of his dice, and roll it 100 times. The results are in the table below. Do these results provide significant evidence that the proportion of times the dice lands on the six numbers are unequal? Calculate the chi-squared test statistic and the range the p-value falls in for this test. Number on die 1 2 4 Frequency 16 21 6 26 13 18 test statistic = 14.12, p-value in (.01, .025) test statistic = 24.368, p-value in (.005, .01) test statistic = 14.12, p-value in (.025, 05) test statistic = 24.368, p-value less than .005 O none of these

Ho:u=34 Ha:u≠ 34 test statistics=2.506 sample size= 16 Hypothesized mean= 34 day sample mean:37.6875 sample standard deviation: 5.885

An education researcher claims that at most 3% of working college students are employed as teachers or teaching assistants. In a random sample of 300 working college students, 5% are employed as teachers or teaching assistants. At a = 0.05, is there enough evidence to reject the researcher's claim? (c) find the standardized test statistic z.

Nonparametric: A small study is conducted to compare birth weight in babies born to mothers who do not smoke to those that smoke more than ½ pack/day. Is there a significant difference between birth weights due to maternal smoking status? Use the Mann-Whitney U test with a 5% level of significance. What is U1 (non-smokers)? Birth weights of infants in two groups of mothers. (Observed data) Nonsmokers Heavy Smokers (≥1/2 pack/day) 8.6 7.0 8.5 5.2 6.3 6.1 9.3 6.7 8.0 6.6 6.8 7.4   4.9   6.3

Studies show that the level of anxiety has increased since the pandemic. The average score before the pandemic was mu equal to 10. A sample of 76 individuals surveyed in the past three months produced M=12.8 and s=6.7. Based on the sample, was there a significant increase in the average anxiety level since the pandemic started at the 5% significance level? What hypothesis test is this? (a)Chi-Square Test for Independence (b)One-Sample T-Test for Mean (c)One-Sample Z-Test for Mean   (d)Two-Sample T-Test for Mean

Answer all

Can you please help me located the null?

A psychologist wants to test whether there is any difference in puzzle-solving abilities between boys and girls. Independent samples of twelve boys and fourteen girls were chosen at random. The boys took a mean of 37 minutes to solve a certain puzzle, with a standard deviation of 4.3 minutes. The girls took a mean of 32 minutes to solve the same puzzle, with a standard deviation of 5.4 minutes. Assume that the two populations of completion times are normally distributed, and that the population variances are equal. Can we conclude, at the 0.05 level of significance, that the mean puzzle-solving times for boys, µ, differs from the mean puzzle-solving times for girls, µ,? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)