If the null hypothesis is not rejected when the null hypothesis is in error, then what has happened? A. Correct decision В. Туре I error С. Туре II error O D. Турe B error

Use RCommander for code and output Define the parameter, the hypothesis, a, and compute the value of the test statistic, p-value, and state the decision and conclusion Childhood lead poisoning is a public health concern in the United States. In a certain population, 1 child in 8 has a high blood lead level (defined as 30 µg/dl or more). In a randomly chosen group of 16 children from this population, determine the following. 1. a) More than 2 but less than 6 children have high blood lead? 1. b) How many of the 16 children are expected to have high blood lead? 1. c) At least 1 child has high blood lead? 1. d) What number of children have high blood lead to reach the 80th percentile? 1. e) Exactly 2 children have high blood lead?

Please have final answer as one or zero.

OThe test statistic in a two- tailed test is z = - 1.63. A) 0.1032; fail to reject the null hypothesis C) 0.0516; fail to reject the null hypothesis B) 0.9484; fail to reject the null hypothesis D) 0.0516; reject the null hypothesis

Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol (µ,p, o) for the indicated parameter. An entomologist writes an article in a scientific journal which claims that fewer than 16 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light. О Но: р 0.0016 H1: ps0.0016 O Ho: p = 0.0016 H1: p > 0.0016 %3D

The mean SAT score in mathematics, µ, is 539. The standard deviation of these scores is 39. A special preparation course claims that its graduates will score higher, on average, than the mean score 539. A random sample of 80 students completed the course, and their mean SAT score in mathematics was 544. At the 0.05 level of significance, can we conclude that the preparation course does what it claims? Assume that the standard deviation of the scores of course graduates is also 39. 圖 Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (If necessary, consult a list of formulas.)

z-03/16/2021 16:29 00:21:10 The dot plots show a random selection of commute times in two cities. City A City B + 0 5 10 15 20 25 30 35 40 45 50 55 60 Commute Time (in minutes) 11 Which is a valid inference based on the data? The commute times are shorter and more predictable for City A. The commute times are shorter and more predictable for City B. The commute times are shorter for City A but more predictable for City B. The commute times are shorter for City B but more predictable for City A.

9)   A hypothesis test is to be conducted using the claim that the mean hourly wage of employess in a large company is at least $21. What are the null and alternative hypothesis? pick one    a H 0 :    21   vs  H a :   < 21   b H 0 :  μ ≤ 21   vs   H a :  μ > 21   c H 0 :  μ  21   vs  H a :  μ < 21   d H 0 :  p  21   vs   H a :  p < 2

perform two non-parametric tests. For each hypothesis test make sure to report the following steps: Identify why you choose to perform the statistical test (Sign test, Wilcoxon test, Kruskal-Wallis test). Identify the null hypothesis, Ho, and the alternative hypothesis, Ha. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Find the critical value(s) and identify the rejection region(s). Find the appropriate standardized test statistic. If convenient, use technology. Decide whether to reject or fail to reject the null hypothesis. Interpret the decision in the context of the original claim. 1) A convenience store owner believes that the median number of lottery tickets sold per day is 44. A random sample of 20 days yields the data below. Performa Sign test to test the owner's claim.Use α = 0.05.   27        43       54       59       26       50       65       22       28       3342        49       49       39       39       44       44       54…

find the p-value for the hypothesis test with the standard test statistic z. decide whether to reject H0 for the level of significanceα 14. Left-tailed test (z=-1.55, α=0.05​) 16. Right-tailed test (z=1.23, α=0.10) 18. Two-tailed test (z=1.95, α=0.08)