nde found to be 30. The company, however, claimed that atmost 5% of their product is defective. Is the claim 17:5. In sample 400 parts manufactured by a factory, the number of defective parts was tenable?

Q: Based on the following statistical statement, χ2(4, N = 148) = 11.76, p = .02, is there a…

A: The significance level is not given. Hence consider the common significance level of 0.05. Decision…

Q: The following data consists of a simple random sample of waiting times (in minutes) for a sample of…

A:

Q: In 2010, 36% of adults in a certain country were morbidly obese. A health practitioner suspects that…

A: State the hypotheses. That is, there is no evidence that true percent adults in a certain country…

Q: Given these results, which is the most accurate statement you can present to the board of the energy…

A: The sample size is 50.

Q: The manufacturer of a popular soft drink claims that cans of this drink contain 12 ounces.  A…

A: Given that  The data are…

Q: After calculating Cohen’s d as a measure of effect size, this treatment would be classified as…

A: Given : n=64 , µ= 50 ,  σ = 12 , sample mean=M=52 Our aim is to find the given statement is TRUE of…

Q: Based on the following statistical statement, χ2(4, N = 148) = 11.76, p = .02, is there a…

A: From the given information, the p-value is 0.02.

Q: O Compute a 75% Chebyshev interval around the sample mean.

A:

Q: 20. Find the z-score that corresponds to P15?

A: Here we need to compute the z score corresponding to the 15th percentile.

Q: (a) In a random sample of 500 men from a particular district of UP, 300 are found to be smokers. In…

A: In the first district, Sample size=500Smokers=300 The percentage of smokers is calculated as, P1=No.…

Q: Calculate the standard error from the given stat Mean = 27; (x-mean)2= 245; n=14

A: From the given information, Consider,

Q: Suppose you want to test the claim that μ > 25.6. Given a sample size of n = 47 and a level of…

A: We have find  p-value and test statistics..

Q: A. When circuit boards used in the manufacture of compact disc players are tested, the long run…

A: Provided information is; Let X be the number of defective boards in a sample of size n=25, so  X~…

Q: S. The effectiveness of a flu vaccine is tested by treating one group of subjects with the vaccine…

A: Here use 2 proportion z test

Q: or r=0.7789 and sample size=10, the corresponding t value is:"     2.512     3.512     3.034…

A: r = 0.7789 , n = 10

Q: The results of a study that used an independent samples t-test was t(28) = 2.14, p = .01. Based on…

A: t(28) means that degree of freedom  = 28 Now, degree of freedom for a t-test one sample case  = n-1.

Q: ina previous poll, 35% of adults with children under the age of 18 reported that their family ate…

A: The given data is, p0=0.35, x= 361, n= 1088p^=xn=3611088=0.3318α=0.05

Q: A local Police Department believes that at least 80% of the drives stopped on Saturday nights for…

A:

Q: In testing the hypothese H0 : p = 0.4  Ha : p ≠ 0.4 The test statistic is found to be 1.87. What is…

A:

Q: 7. A poll of 60 students selected at random at State University found that 12 were in favor of…

A:

Q: tamin Din 88 chadren whe live in a northem state was measured, and the sampte proportion who were…

A: Since we answer only up to three sub-parts, we'll be answering the first three sub parts. Please…

Q: an education researcher claims that 57% of college students work year-round. in a random sample of…

A:

Q: c. After conducting the appropriate significance test, the test statistic was found to be -3.6893.…

A: # given test statistic z=-3.6893  then conclude about the null hypothesis ?

Q: An independent-measures study is analyzed using the appropriate t-test, and the APA summary is t(56)…

A: Introduction: Denote μ1, μ2 as the true population means for the two groups being compared.

Q: 1. Nationwide, the average total amount of student loan debt in 2012 is normallydistributed with a μ…

A: Given information Hypothesized mean µ = $29400 Sample size (n) = 36 Mean x̅ = $27400 Sample Standard…

Q: Estate Association claims that the median rental for three-bedroom condominiums is more than $1,200…

A: The null hypothesis always contains less than Or equal(≤), greater than Or equal (≥)and equal to(=)…

Q: In a survey, 45% of the respondents stated that they talk to their pets on the telephone. A…

A: It is given that in a survey 45% respondents accept that they talk to their pets on phone. To check…

Q: In 1948, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: State the hypotheses.   Obtain the value of the test statistic. The value of test statistic is…

Q: A restaurant is planning to remove fried chicken from the menu. Sales are said to have fallen below…

A:

Q: A manufacturer of automobile purchases machine bolts from a supplier who claims that no more than 5%…

A: 4) The test hypotheses are given below, Null hypothesis: H0:p≤0.05 Alternative hypothesis:…

Q: The police department wanted to know if 911 calls came in more often on some days of the weekend.…

A: State the hypotheses. The hypotheses are stated below:   Obtain the expected frequencies. The…

Q: 6. A poll of 80 students selected at random at Midtown University found that 20 were in favor of a…

A:

Q: 2. Based on a poll of registered voters in a large city, 120 out of a random sample of 250 women…

A: p1 = 120/250=0.48 p2 = 132/240 = 0.55

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern plke over 20…

A: a) Denote p as the true proportion of guests who catch pike over 20 pounds.

Q: A phone industry manager thinks that customer monthly cell phone bill have increased, and now…

A: H0 : ? =80 H1 : ? >80 Population mean = ? = 80 Population S.D = ? =9 Sample size = n =81…

Q: The following table shows the results of a screening test hypothesized to identify persons at risk…

A: Answer: Using the given table, we have,

Q: A random survey of enrollment at 10 community colleges across the United States yielded the…

A: Solution: Let X be the random variable. The given data for X is 2523, 1707, 5420, 2835, 1129, 5452,…

Q: A business journal investigation of the performance and timing of corporate acquisitions discovered…

A:

Q: In a survey, 43% of the respondents stated that they talk to their pets on the telephone, A…

A: The hypothesized proportion is 0.43.

Q: A soft drink manufacturer wants to determine the proportion of its soda cans that meet quality…

A: The sample size n= 2000 cans. He finds that 99.7% meet the quality standards.

Q: It has been claimed that at UCLA at least 40% of the students live on campus. In a random sample of…

A:

Q: Compute the z score in the following scenario: Raw score = 28 Mean = 20 SD = 2 The Z score is…

A: GivenRaw score(x)=28Mean(μ)=20standard deviation(σ)=2

Q: in which the conditions of the f the sample che study has ever been carrie pnd

A: (a and b), but not (c and d)

Q: if a treatment sample has n = 22 and a control sample of n = 20, the independent measures t test has…

A:

Q: 1. A psychologist is interested in investigating the proportion of depressed teenagers in a…

A: As per our guidelines we are suppose to answer only one question.

Q: A sample of n = 10 automobiles was selected, and each was subjected to a 5-mph crash test. Denoting…

A: we have to find proportion  of success...

Q: 19. If there was a bigger mean difference between the strength group and the walking group, e.g., an…

A: Given that  Sample sizes n1=14 , n2=28 M1=15 , M2=12 SP2=14

Q: What is the appropriate alternative hypotheses? Denote p as the proportion of toast landing buttered…

A: Given,claim : the toast to land buttered side down morethan 50% of the time.

Q: The manufacturer of a popular soft drink claims that cans of this drink contain 12 ounces.  A…

A: Given that