YMCA has a new swimming instructor (Teacher 1) is being evaluated by how many of his students pass a standard swimming test. Of his 30 students, 17 pass the test. However, the more experienced instructor (Teacher 2); who taught  85 students had 62 pass the test.    Is this enough evidence to show that the pass rate for (Teacher 1) students is lower than that of (Teacher 2) students? (Use alpha .10)

Q: Based on information from a previous study, r1 = 37 people out of a random sample of n1 = 97 adult…

A: The provided information are:

Q: A pizza chain advertises that, in recent taste experiment in which their pizza (pizza A) was…

A: Expected value (E) =Total frequency 5

Q: Cola A 59 89 72 HEHEHERRS Cola B 90 71 77 81 86 83 87 Cola A 76 87 60 60 72 Cola B 88 80 69 93

A: If x1, x2, x3,........, xn are the n number of observations then the mean is calculated by using the…

Q: According to the Center for Disease Control (CDC) during the 2018-2019 season the percent of…

A: Given that  p=45.3% , n=500 , X=200

Q: A basketball player with a 65% shooting percentage has just made 6 shots in a row. The announcer…

A: The basketball player has a shooting percentage 65% . So, the probability that the player will make…

Q: Use a 10% level of significance to test the claim that there is no difference in mental alertness…

A: Group A Group B (x-xbar)^2 (y-ybar)^2 77 57 32.80165 162.5625 93 82 472.0744 150.0625 75 84…

Q: According to one investigator's model, the data are like 400 draws made at random from a large box.…

A: Given thatThe number of random samples (n) = 400The null hypothesis says that the average of the box…

Q: Dr. S. Oberman has the research hypothesis that drivers who have consumed one drink are actually…

A: The test statistic is z=x¯-μ0σn z=78-752464=33=1

Q: 109. Suppose a study was done to replicate the results of the 2003 study by Wansink et al. in…

A: Anova is the measure of a parametric test. It is used to compare the average significance of three…

Q: Dr. S. Oberman has the research hypothesis that drivers who have consumed one drink are actually…

A: The standard error can be calculated as: SE=sn Here, s= Standard deviation n = Sample size…

Q: 1622.17 SS2 = 598.8 %3D een = 2106.92 What are the hypotheses for this test? What is the critical…

A:

Q: Suppose there is a study of the effects of sleep deprivation on memory. Thirty individuals are taken…

A: The provided information is as follows:The given scenario is related to the effect of sleep…

Q: A psychologist has developed a mental alertness test. She wishes to study the effects (if any) of…

A: Thank you for posting this question! Since it contains multiple sub-parts, I will answer the first…

Q: Practice Exercises: Solve the following problems. Show complete solutions. 1) In a basketball game…

A: Note: According to Bartleby Expert guidelines, we can answer only first question with their three…

Q: Professor Norman wants to know what the deal is with alcohol and memory, so she designs a memory…

A: Paired t-test :  A paired t-test is used to compare two population means where you have two samples…

Q: A researcher has participants expecting to receive either painful or mild electrical shocks during a…

A: Usually in survival analysis studies we can use both parametric and non-parametric statistics. For…

Q: Nurses at Lynchburg General plan to implement a new training program for nursing aids to deal with…

A: Given info: The nurses reported the following statistical statement: χ2(1, N = 12) = 2.71, p = .52.

Q: For the following hypothesis, please state the IV and DV: “The gender of the interviewer has an…

A: In statistics, the independent variable (IV) is the variable which does not depend upon other…

Q: An experiment is conducted to examine the effects of a new drug on genetically modified mice. The…

A: An experimental unit is a participant in the experiment that receives the treatment and is observed…

Q: A new RX is designed to reduce blood pressure, and is being tested in two doses (100 mg and 50 mg).…

A: In the given case we want to test if there is any significant effect of the doses of the new RX in…

Q: Read through this scenario and look at the data that was collected.  State the null and all possible…

A: Provided ANOVA result with replication

Q: A statistics tutor wants to assess whether her tutoring has improved her students’ grades. She…

A: Following table shows the calculation for difference, its mean and standard deviation:

Q: Among random patients at Kaiser, the number of people with certain blood types is as follows:…

A: From the given information we conduct chi squre test for independence.

Q: A researcher is studying the pickerel population in two lakes, Lake Rick and Lake Morty. Samples of…

A: There are two independent samples which are Lake Rick and Lake Morty. We have to test whether there…

Q: Active is an energy drink that claims to provide physical strength. To test this claim, the…

A: Introduction: The quantity r gives the linear correlation coefficient between two variables. The…

Q: A psychologist has developed a mental alertness test. She wishes to study the effects (if any) of…

A:

Q: A special education teacher did research on whether or not there is a relationship between the…

A: The correlation coefficient and slope are –0.863 and –1.212294, respectively.

Q: r. Lyte wishes to study speed of Reaction Time to press a button in response to the onset of a lamp.…

A: Introduction: A confounding variable in a study is a variable that has an effect on the response…