1. One-sample t-test. To test the hypothesis that eating fish makes one smarter, a random sample of 12 persons take a fish oil supplement for one year and then are given an IQ test. Here are the results: 116 111 101 120 99 94 106 115 107 101 110 92 Test using the following hypotheses, report the test statistic with the P-value, then summarize your conclusion. HO: u = 100 Ha: µ> 100

Q: o test whether the mean time needed to mix a batch of material is the same for machines produced by…

A: For the given data using Anova single Factor testing the hypotheses at alpha =0.05 L.O.S

Q: Determine the P-value for a one-sided test with z = 1.89

A: here given , hypothesis test is one tail  test statistic  =  1.89  use excel command for p -value

Q: Determine the P-value for a two-sided test with t = 2.85 and n=9 Oa. 0.035 O b. 0.01 OC. 0.015 O d.…

A: Given information- We have given the two-sided t-test. The value of the t-test is, t = 2.85 Sample…

Q: Three admission test preparation programs are being evaluated. Suppose the scores obtained by a…

A: Given information: The data represents the test scores of 3 programs A, B and C.

Q: A research group conducted a survey about church attendance. The survey respondents were asked about…

A: Given Information: Significance level α=0.05 H0: Church attendance is independent of age. Ha: Church…

Q: A store manager wants to see if the of sales for an store. The manager observes the number of items…

A: Since, you have posted a question with multiple sub-parts, we will solve the first three complete…

Q: we have the number of recorded children from 20 randomly selected barangays in the Philippines to…

A: Arranging Observations in the ascending order, We get…

Q: Imagine a researcher asks a sample of five people to drive two types of cars and rate each of them…

A: Here we will use the student's t-test for the above problem as n<30 & the population standard…

Q: A research group conducted a survey about church attendance. The survey respondents were asked about…

A:

Q: A college student wants to determine whether the stress level of a student is associated to his/her…

A: Solution-: We have following table: Stress Level BMI Total Normal  Not Normal Low 20 31 51…

Q: Nine students took a standardized test. Their scores are listed below. Later on, they took a test…

A: The wilcoxon signed ranks test, checks the median difference between two paired groups. If the…

Q: It is claimed that the proportion of OSU students who belong to a fraternity or a sorority is 0.15.…

A: P value will claculated by using z table

Q: State whether the standardized test staustic t indicates that you should reject the null hypotnesis.…

A: Solution: The critical value is 1.895 Decision Rule: Reject Ho if t > 1.895

Q: A chi-square test for goodness-of-fit has a sample size of 50. What are the degrees of freedom for…

A: A chi square test for goodness-of-fit is a non parametric test. It is used to test whether there is…

Q: The table below shows the scores of a group of students on a 10-point qu Test Score Frequency 3 4 6.…

A: Solution: Test score (x)  Frequency (f)  fx Cumulative frequency (< type)  3 6 18 6 4 1 4…

Q: A sample of n - 16 scores is obtained from a population with u = 50 and o - 16. If the sample mean…

A:

Q: A student's score on an actuarial exam is in the 78th percentile. What can you conclude about the…

A: a student's score on an exam is in the 78th percentile. we have to identify correct statement.

Q: Listed below are the number of words spoken in a 24-hour period by each person in selected…

A: Let d be the difference between female and male. Sample Size, n=8 Construct the table to compute…

Q: Is there an association between whether adults eat breakfast and whether they own a pet? To…

A: To find: If there is an association between whether adults eat breakfast and whether they own a pet

Q: Find the standardized test statistic to test the claim that , =H2. Two samples are randomly selected…

A: Given that,mean(x)=20standard deviation , σ1 =2.5number(n1)=40y(mean)=21standard deviation, σ2…

Q: a) Compute the standard error and test statistic for the hypotheses Ho: d = 0, HA: Ma # 0. The…

A: here given  xd¯ = 3.4 sd = 7.5n = 36 , df = n-1 = 35

Q: c) Find the standardized test statistic z. (Round to two decimal pla II

A:

Q: Is the number of children that a college student currently has independent of the type of college or…

A: The data shows the type of college or university and number of children.

Q: If the Chi-square (x2) test statistic = 16, what decision would you make about your hypotheses? (…

A: The number of rows is 2 and the number of columns is 2.

Q: A sports statistician is interested in determining if there is a relationship between the number of…

A: AnswerGiven,[O]           Foot ball      Basket ball       Soccer        Baseball       TotalHome…

Q: Find the standardized test statistic, z to test the claim that p, = p2. The sample statistics listed…

A: The sample proportions are: The value of the pooled proportion is computed as :

Q: The table below shows results from a recent General Social Survey on two variables, respondent sex…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: Claim: μ₁ = ₂; x = 0.05. Assume o 0 ² = 0²/2 1 Sample statistics: x₁ = 33.3, s₁ = 3.5, n₁ = 13 and…

A: Givenclaim is μ1=μ2α=0.05Assume σ12=σ22Mean(x1)=33.3standard deviation(s1)=3.5sample…

Q: Find the standardized test statistic, z, to test the claim that p1< p2. Use α = 0.10. The sample…

A:

Q: searcher is interested in investigating whether the military branch a person signs up for and the…

A: Note: As per the Bartelby guidelines only three sub-parts can be answered. Kindly resubmit the…

Q: Which of the following ways of stating the hypotheses for population means are valid? Select all…

A: The population mean is .

Q: You are interested in the relationship between the income of recent college graduates and the income…

A: Define the variables such that,Data:yixi345942865110560922855356638624690Total=…

Q: At the a Y 0.05 significance level, what is the most appropriate conclusion to draw from this test?

A: To make decisions about hypothesis, we make comparison of p-value and level of significance.

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: p0 = 0.33 n = 108  x = 45  p̂ = x/n = 45/108 = 0.4167Significance level (α) = 0.01

Q: Which of the following can increase error in a statistical experiment? (Select all that apply)   a.…

A: Solution:  There are two types of sampling  1) Probability sampling or random sampling  2) Non…

Q: Test of u = 34 vs not = 34 Variable N Mean StDev SE Mean T P 16 35.274 1.783 a. b. 0.012 c. How many…

A: We have given that the One-sample T-test.

Q: ​(a) Find the test statistic. ​(b) Find the standardized test statistic.

A: Given : Hypothesis: Ho: μ1=μ2 α=0.01 X1=32.9 S1=3.7n1=12X2=31.6 S2=2.7n2=10

Q: he numbers of state parks found in selected states in three different regions of the country are…

A: Anova is a type of parametric test. It used to determine the mean significance between the three or…

Q: 10. A random sample of n - 4 individuals is selected from a population with µ = 35, and a treatment…

A: Solution :  Given : n =4             μ = 35             M = 40.1             SS = 48 a. Difference…

Q: a. In words, define the random variable X1 = b. Họ: and X2 = с. На

A: Given: Significance level α=0.1 Claim: Technology effectively increased fuel efficiency.

Q: We take a simple random sample (SRS) from a population to study the effect of marital status…

A: Selection of an appropriate inferential statistic depends on certain key conditions.

Q: When we test the hypothesis that the population proportions are equal, we can use the Z test for a…

A: It is given that the statement about to the hypothesis test.

Q: Members of fraternities and sororities are required to volunteer for community service. Do…

A: Given that                        We have to conduct hypothesis testing for difference of two…

Q: Read this sentence from the results section of a recent publication regarding the perception of…

A: t(14533) = 16.8 This implies that degrees of freedom = n-1 = 14533