You are a researcher who wants to know what the mean (µ) level of anxiety would be for the whole population if they were all receiving a new anti-anxiety therapy.  You can’t give the therapy to the whole population, so you give it to a sample, and you get M = 32.1 as the average anxiety level for the sample on the therapy.  What is the reason that you can’t just simply assume that µ = 32.1?

Q: A therapist wants to assess the effectiveness of different types of therapy animals on her patients'…

A: Given information: Given that the therapist wants to assess the effectiveness of different types of…

Q: A well-known psychologist has established what she calls her Generalized Anxiety (GA) scale. The GA…

A: Number of adults =11Regression equation is

Q: A DNP student wants to evaluate the change in knowledge scores of a group of cardiac patients after…

A: In given problem, a DNP student obtains a pretest at the beginning of class and immediately after…

Q: alizes in adolescent anxiety and has been collecting information about the frequency of all clients'…

A: Confidence Interval Z 90% 1.645 95% 1.960 99% 2.576 The z-score = 1.6 The z-score is…

Q: Researchers identified 763 women with breast cancer and 741 women without breast cancer. Based on…

A: An observational study is a study in which the researcher simply observes the subjects without…

Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of…

A: Given Information: Population proportion (p) = 0.6  Sample size (n) = 95  Sample proportion (px) =…

Q: Suppose you work as a researcher for a local anti-gambling advocacy group. You decide to conduct a…

A: We have given that,  Average (x̄) = 39.64, sample size (n) = 29 and standard deviation (s) = 112.84…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: State the hypotheses.

Q: In Dr. Potter’s study of ‘Objective Increases in Fear Based on Type of Haunting’, he reported that…

A: a. It is given that, ghosts earned a z-score of 0.93, spirits earned a z-score of -0.75, and…

Q: If you are only comparing two groups of respondents, and the t-value is found to be 2.30, what will…

A: If you are only comparing two groups of respondents, and the t-value is found to be 2.30, what will…

Q: Please check my answer.

A: The results of the study might be likely due to confounding because there could be other factors at…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: Given, n1=120                                         n2=100 p1=35%=0.35…

Q: How is my work? Should anything be changed?  A researcher wanted to examine the effect of a new…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks Instruction : How…

Q: ou are testing the claim that the proportion of men who own cats is significantly different than the…

A: given data, sample of 100 men, and 10% own cats.n1=100p^1=0.10x1=0.10*100=0.10 You sample 80 women,…

Q: The well-known psychologist Dr. Elbod has established what he calls his Generalized Anxiety Scale…

A: Using the linear regression line:y^​=8.62−0.31x a) When the gas score x= 6.3y^​=8.62−0.31∗6.3=6.67…

Q: e testing the claim that the proportion of men who own cats is significantly different than the…

A: p^1=0.5p^2=0.45 p^=180*0.5 + 160*0.45180+160 = 0.47 hypothesis: H0 :p^1=p^2H1:p^1≠p^2 since we have…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: Introduction: It is of interest to test whether the population proportions of men who own cats, and…

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: The volumnes of soda in quart soda bottles can be described by a normal model with a mu of 32.3 oz…

A:

Q: The researcher is interested in how people change on the personality dimension of neuroticism over…

A: a) Independent sample test is used when we have two sample and we are interested to compare the two…

Q: A psychologist wanted to study the effect of illicit drug use on one’s ability to focus or…

A: We have given test results of a hypothesis test and we have to give answers related to it

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: The objective of this question is to find the test statistic for the claim that the proportion of…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: The sample proportions are The pooled proportion or weighted estimate of p is

Q: What is wrong if you conduct a study and you calculated r=-3.0,then what?

A: If we conduct a study and got the correlation coefficient value (r) = -3.0

Q: McCallister conducts a study to examine the relationship between the amount of time kids spend home…

A: Regression is used for prediction analysis. It has two types of variable and two types of regressor.…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A:

Q: A sample of n = 11 scores has a mean of M = 55.  One new score is added to the sample and the new…

A: It is given that , A sample of n=11 has a mean of M =55.

Q: You watch people exiting Dodgers stadium after a game and you write down two things about each…

A: We know that,      * Chi square goodness of fit test is used to            determine whether a…

Q: Roy ‘s Texaco wants to keep the price of its unleaded gasoline competitive with that of other…

A:

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: We will use the large sample test for difference of proportions. Z=p1-p2P.Q.(1n1+1n2)where P…

Q: The number of pair days off taken by eight employees at a local small business is compared to the…

A: Given Information :  The number of pair days off taken by eight employees at a local small business…

Q: The claim is that the proportion of peas with yellow pods is equal to 0.25 or 25% the sample…

A:

Q: The athletic director at a large university compared the proportions of freshmen (1st year students)…

A: The hypothesis is, Null hypothesis: H0: There is no difference between proportions of freshmen and…

Q: According to an article nearly 45% of all Americans have brown eyes. A random sample of 100 people…

A: the first option is correct , explanation is in below pdf:

Q: 2. A psychologist uses a treatment method called Cognitive Behavioral Therapy (CBT) to help reduce…

A: Given, μd = 35 Sample mean: Md = 8.2 Sample standard deviation: sd = 426.3^0.5 = 20.65 n = 30

Q: You are a consumer psychologist interested in holiday spending. A national census reports that the…

A: Here we need to find the required degrees of freedom.

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: See tha answer

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: I am struggling in my Psyc 300 Statistic class.  I seem to have missed a concept early in our class…

A: State the hypotheses That is, there is no evidence to conclude that the students’ GPAs differ from…