Decide whether or not the two events in question are independent or whether it is not possible to tell. Justify your answers. P(B) = 0.3 and P(A| B) = 0.3

Using the below table:     A1 A2 B1 0.4 0.3 B2 0.2 0.1   Calculate P(A1 | B2). Calculate P(A2 | B1). Are the events independent? Explain. Please do not solve using Microsoft Excel.  My professor is not teaching through excel and I would like to see the steps and equation for purposes of studying for my exam.

C and D are events with P(C) = 0.4 and P(D) = 0.5 and P(C|D) = 0.6.For each part, show how you derive your answer. Show formulas if appropriate. (a) Find P(C and D) (b) Find P(D|C)

11/8/2020 MyOpenMath From previous studies, it is concluded that 39% of phone numbers in a certain city are unlisted. A researcher claims it has decreased and decides to survey 100 adults. Test the researcher's claim at the a = 0.05 significance level. Preliminary: a. Is it safe to assume that n 10. Round your answer to one decimal place. пр(1 — р) — Test the claim: a. Express the null and alternative hypotheses in symbolic form for this claim. Ho: H.: Use the following codes to enter the following symbols: > enter >= < enter <= + enter != b. After surveying 100 adult Americans, the researcher finds that 45 phone numbers in a certain city are unlisted. Compute the test statistic. Round to two decimal places. C What is the p -value? Round to 4 decimals. p = d. Make a decision based on a = 0.05 significance level. O Reject the null hypothesis. O Do not reject the null hypothesis. e. What is the conclusion? O There is not sufficient evidence to support the claim that 39% of phone numbers…

Research suggests that spending time with animals can reduce blood pressure. I want to know whether particular animals are better at reducing blood pressure than others. I randomly select 10 participants. Each participants' blood pressure is measured when they enter the lab (Time 1; baseline). Participants' blood pressure is then measured again after they spend a half-hour with a dog. Lastly, participants' blood pressure is measured a third time after they spend a half-hour with a cat. 1. How many levels of the IV are there? A. 3 B. 2 C. 4 D. 1 2. Is the scenario above between- or within-subjects? A. Within-Subjects B. Between-Subjects   3. What test would be used to analyze the scenario above? A. One-Way Repeated Measures ANOVA B. One-Way Between-Subjects ANOVA C. Independent Groups t-test D. Correlated Groups t-test

A comprehensive survey released by a college reports that the true proportion of all students at the college who use drugs is 0.3. You survey 100 students in your dorm and record that the proportion of students who use drugs is 0.15. The proportion of all students at this college who use drugs is a _____________________ and the proportion of students who use drugs in your dorm is a _______________________.     a. statistic; parapeter   b. parameter; statistic   c. population; sample   d. measure of central tendency; measure of variability   e. non of the above

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The results of a survey on the belief that stem cell research has merit are shown in the table below. X 1524 F4 DOO 000 N 2104 Here, X denotes the number who believed that stem cell research has merit. Complete parts a and b below. a. Explain how to interpret "Sample p" and "95% CI" in this table. The "Sample p" is the proportion of in the sample who believe stem cell research has merit, 1524/2104 0.72. The "95% CI" is the 95% confidence interval and it means that we can be confident ▼proportion. that the interval to contains the (Round to four decimal places as needed.) 28 Sample p 0.724335 F5. % 5-1 6 tv Clear all F6 95% CI (0.7052, 0.7434) C & A4 F7 Check * 8 Numbers Smilan DII F8 B DD F9 HA F10

Lecture(12.8A) A researcher thinks that people have become more anxious when they hear about violent crime in the news. He asked a group of random participants to fill out two questioners. One questionere measured anxiety on a point scale from 1 to 10 with high anxiety  resuting in higher scores. The other questionare asked participants to report the incidents  of violent crime they had heard about   (throuh media or face- to-face cummincation) in the last two weeks. The researcher gave the participants a score based on the total number of incidents reported. (1) What type of test should  the researcher use to test this hypothesis.? (2) What would be the null and alternative hypotheses for this study?    (Select two answers for each)   (a) Z test   (b)single sample t test   (c)dependent sample t-test   (d) independent sample t -test   (e) ANOVA   (f) Pearson correlation t-test (roe)   (g) Chi Square goodness of fit test.    (h)Chi Square test for independece   (i)Ho: roe<=0…

Q17