Job satisfaction: The General Social Survey sampled 791 employed people and asked them how satisfied they were with their jobs. Of the 791 people sampled, 373 said that they were completely satisfied or very satisfied with their jobs. Can you conclude that the percentage of people who are completely or very satisfied with their jobs differs from 0.45? Ho:p = 0.45 H:p = 0.45 Part: 0/3 Part 1 of 3 (a) Compute the value of the test statistic. Round your answer to two decimal places. The test statistic is

Q: A sample of 50 provided a sample mean of 19.4. The population standard deviation is 2. (a) Find the…

A: here use given null and alternative hypothesis and basic of hypothesis testing here population…

Q: Test Scores of 15 Students: 30 28 29 20 18 20 29 29 30 26 28 19 19 26 29 Find the probability that…

A: Given data is 30,28,29,20,18,20,29,29,30,26,28,19,19,26,29sample size(n)=15

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Q: Play the piano: Georgianna claims that in a small city renowned for its music school, the average…

A: Sample size (n) = 20Sample mean (x̅) = 5.4Standard deviations (s) = 2.2 Confidence level (c) = 0.95

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A: We have given that  Mean = 60 Standard deviation = 18   Note: According to Bartleby expert…

Q: 1. Let X~Poisson(a). Show that E[X(X – 1)(X – 2) ... (X – k)] = ak+1 -

A: Solution

Q: 2. Let X~N(u, o2). Show that the MGF of X is etHtc²a².

A:

Q: 2. Using the t table, give the confidence coefficients for each of the following. n = 12, 95%…

A: According to guidelines we solve first three subparts only when given multiple subparts.

Q: a) What is the mean of the sampling distribution? b) What is the standard deviation of the sampling…

A: Let p be the population proportion. Then p = 0.72 Let X denote the number of Americans in sample of…

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A: From the provided information, Number of Hours Frequency 0 ≤ x < 15 40 15 ≤ x…

Q: Directions: Solve the given problem completely. For each number, satisfy the following: 1. Word…

A: X~N( μ , ?^2 )   Z-score =( x - μ)/ ?   NOTE:- According to bartleby guidelines expert can solve…

Q: What is the probability that when a break-in occurs that the first two alarms systems will go off,…

A: Let us define some events A : first alarm system goes off. B : second alarm system goes off. C :…

Q: If the test statistic is y2 = 0.579 and the critical value is y2 = 5.991, what is your conclusion…

A: We have given that  The test statistic is χ2 = 0.579 The critical value is  χ2 = 5.991

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A: Number of Days Frequency 0-5 120 6-10 55 11-15 15 16-20 10

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A: Assume that ρ is the population correlation coefficient between the variables.

Q: 3. What percentage of College students have made at least one online purchase in the last three…

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given that there is no reasonable estimate of population proportion. The level of significance is…

Q: Solvent cement is used to join PVC joints. Researchers are interested in predicting the amount of…

A: From the output, the lower confidence limit is -0.067.

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A: To answer C and D Questions we have to fit a linear regression equation.

Q: Create a normal distribution and explain the test scores of the students in each particular area.…

A: Let X be a normally distributed random variable with mean μ and variance σ2. To create a normal…

Q: Given that the mean score is 83 and the standard deviation is 6. What z-score corresponds to the…

A:

Q: A candy company claims that 11% of the jelly beans in its spring mix are pink. Suppose that the…

A: Given that  n=25 , p=11%=0.11 , q=1-p=1-0.11=0.89

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A:

Q: how do I find the P-vaule

A: The p value is the probability of a particular statistical measure like mean or St deviation  Also…

Q: Question 6 > You are interested in estimating the the mean lifespan of a cell phone. From past data,…

A: Method are defined in the solution

Q: Find the area under the standard normal curve from z=0 to z=1.76.

A:

Q: 10. When is a Type I error committed? A. We reject a null hypothesis that is true. B. We reject a…

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Q: Group the data and hence determine A. The sample mean B. The sample median C. The sample mode.

A: Frequency Table Class Count 47-48 5 49-50 8 51-52 18 53-54 5 55-56 2 57-58 3 59-60 1

Q: What is the standard deviation of the following sample data: 16, 15, 41, 28, 20, 34. Round to 2…

A:

Q: 90 85 75 76 81 76 75 76 76 96 89 88 73 81 93 76 76 96 89 88 73 81 89 74 74 74 76 86 75 96 79 73 86…

A: x x2 90 8100 85 7225 75 5625 76 5776 81 6561 76 5776 75 5625 76 5776 76 5776 96…

Q: Operational Statistics Student reimbursable breakfasts - 265 Student reimbursable lunches - 349…

A:

Q: What is an outlier?

A: We have to describe the outlier. Outlier can be present in any dataset.

Q: Given the data set A = {O, 0, 12, 13, 14, 15, 16, 18, 22, 25, 30} the mean is the median is and the…

A:

Q: The number of sick days taken (per month) by 200 factory workers is summarized below. Number of…

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Q: Student Math Test Score English Test Score 1 30 25 2 28 26 3 29 27 4 20 30 5 18 16 6 20 16 7 29 25 8…

A: a. The provided information is Student Math Test Score English Test Score Difference…

Q: O Health insurers are beginning to offer telemedicine services online that replace the common office…

A: Data given 90,104,55,76,93,79,56,33,82,50,46,73,92,82,41,56,37,96,74,99

Q: Duncan test: From the following temperatures of five different environments Env. 1 Env. 2 Env. 3…

A: Given Information: Consider the given dataset: Env. 1 Env.2 Env.3 Env.4 Env.5 14.8…

Q: The Paleo diet allows only for foods that humans typically consumed over the last 2.5 million years,…

A: Given: Sample 1   Sample 2   n1 250 n2 250 x̅1 7.6 x̅2 5.8 s1 20.75 s2 12.5

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 144 and a standard…

A:

Q: When performing a hypothesis test to decide whether a predictor variable is useful to make…

A: For the given statement Select the correct choice

Q: You may Tate appendix table answer this question. A study showed that 63% of supermarket shoppers…

A: Ho: p≥0.63 vs H1: p<0.63 (left tailed)   Z=-2.49

Q: A data set contains information on the grams of fat and number of calories in 28 different fast…

A: Given that r =-0.53 , n =28 p value = ?

Q: A survey of women who are the main meal preparers in their households reported that 80% know that…

A: From the provided information, A survey of women who are the main meal preparers in their households…

Q: In a poll of 517 human resource professionals, 45.8% said that body piercings and tattoos were big…

A: A poll of 517 human resource professionals; n=517 45.8% said that body piercings and tattoos were…

Q: If the readings are 2 3 4 the average deviation is---- O 5.33 O 3.34 O 2.44 O0.66

A: The objective is to find out the average deviation of the values 2,3 and 4

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A: Given Sample mean x̄=40.4, population standard deviations σ=10.5, level of significance ɑ=0.10,…

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Q: II. Create a normal distribution and explain the test scores of the students in each particular…

A: GivenThe test scores of students in an EQ test follow a normal distribution with Mean μ=179Standard…

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A: For the given data Perform Z test for one mean

Q: For a given disease gene, specified mode of inheritance and observed data set, if the p-value for a…

A: We have given the following  statement about the chi - square goodness of fit.  P- value = 0.98…