Question 19 A lawyer claims that women are pald less than men for the same work. In a random sample of 35 men, the average salary was $ 50,000. In a different random sample of 40 women, the average salary was $ 49,500, Assume both population standard deviations are $ 2000 What is the proper conclusion O reject null and enough evidence to reject claim O do not reject null and not enough evidence to reject clalm O do not reject null and not enough evidence to support clain O reject null and enough evidence to support claim

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: Given: n = 8 Significance level α = 0.05 Formula Used: t-statistic = X-μSn where, Sample mean X =…

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: Given Information: Sample size n=8 11, 4, 14, 4, 11, 9, 7, 9 Significance level α=0.05 X is the…

Q: Does this provide evidence that the proportion of UCD students who are left-handed differs from the…

A: Given : n=240 , X=30 , p0=0.10 , α=0.05 Here , we want to test the claim that the proportion of UCD…

Q: what would the mean and standard deviation of the sample proportion ˆp be?

A: Let X be Pennsylvanians who have a high school diploma Given, n = 225 p = 0.83

Q: (a) Find the mean of p. (b) Find the standard deviation of p. (c) Compute an approximation for P…

A:

Q: A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were…

A: The values of the 27 different awards are given.

Q: 2. Medical research has shown that repeated wrist extension beyond 20 degrees increases the risk of…

A: 2. Let μ be the population mean wrist extension for people using this new mouse design. The test is…

Q: 3. A farmer cultivates chillies in two separate fields. When the chillies are ready to be picked,…

A:

Q: hts to determine whether the mean wasted tone during an 8-hour less than the mean of 120 minutes…

A:

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: Followings are the Explanation of the question  Calculate the Sample Mean and Sample Standard…

Q: You are testing the claim that the mean GPA of all the night students is different from the mean GPA…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: In a hypothesis test, the following random sample of six observations was selected from a normal…

A:

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: a) We will be using Student's t-test with n = 8 degree of freedom = n-1 = 7 So, this would be t7…

Q: In a survey of 240 students in an elementary statistics class at the University of California-Davis…

A: Given that : n=240                      x=19 (Left handed) x=221 (Right handed) By using one sample…

Q: A manager wishes to see if the time (in minutes) it takes for their workers to complete a certain…

A: The given hypotheses are as follows: H0: µd = 0. Ha: µd ≠ 0.

Q: A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were…

A: Given,∑Xi=20,185∑Xi2=24,665,129Sample size(n)=27

Q: 86 105 130 160 180 195 133 145 214 105 145 152 151 135 87 99 92 119 129 S= USE SALT (a) Calculate…

A: Answer:- given data ,  86,105,130,160,180,195,133,145,214,105,145,152,151,135,87,99,92,119,129…

Q: 55,000, average male's salary under 6 foot tall of $47,000, with a p-value of 0.45.  Based on that…

A: Given: p-value=0.45 We usually take the significance level as 5%, i.e, 0.05. The decision rule…

Q: An article reports that blue eyed people earn less than brown eyed people, with these numbers:…

A: Rejection rule: Reject the null hypothesis if p-value is less than or equal to the level of…

Q: The mean score on a widely freshman history examination is 75. A history teacher at a very large…

A: Given : population mean(μ)=75 Xi=test scores Dataset:

Q: A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were…

A:

Q: In a trial for the university athletics competition, we aim to do inference on the chest size of all…

A:

Q: Samples of Republicans, Democrats, and independents, have been tested for their level of support for…

A: We have given that samples of Republicans, Democrats, and Independents have been tested for their…

Q: For a 4-unit class like Statistics, students should spend average of 12 hours studying for the…

A: Given data, Mean is 14 sd is 3.5 n=28 By empirical rule 68% of the data lies within one standard…

Q: A researcher wondered if the currently believed global male-births proportion value approximately…

A: Given Information: Population proportion (po) = 0.512  Sample size = 1000 Sample proportion =…

Q: Tollowing statements are true matched pairs)? cerning the mean of the ences between two dependent…

A: The matched pairs dependent t-test is used when the same participants are tested more than once in…

Q: What is the source of variability in the random variable? O A. Random errors OB. The sample size C.…

A:

Q: For a 4-units class like Statistics, students should spend average of 12 hours studying for the…

A:

Q: The article "Euthanasia Still Acceptable to Solid Majority in U.S."t summarized data from a survey…

A: Given,n=1025x=707sample proportion(p^)=xnp^=7071025=0.6898

Q: An article reports that blue eyed people earn less than brown eyed people, with these numbers,…

A: The results are statistically significant, if p-value is less than level of significance.

Q: A report by the Gallup Poll found that a woman visits her doctor, on average, at most 5.8 times each…

A: When the given sample size is less than 30 we use t-test as a test statistic. Using t-test we can…

Q: Which of the following is TRUE? A. As the number of observations increases, trit also increases B.…

A: There are two methods used to approach the null hypothesis test. They are critical value approach…

Q: greater than the average age for wives? (Statkey: Use Descriptive Statistics for Two Quantitative…

A: * ANSWER :-    From the given information the answer is given below as ,  (1)

Q: You observe a sample of five numbers between 0 and 10. Their median is 5 and their mean is 5. What…

A: The numbers are between 0 to 10. The mean is the ratio of the sum of all observations to the total…

Q: Workers employed in a large service industry have an average wage of $15.00 per hour with astandard…

A: Solution: Given information: n= 64 Sample size of workers x=12.50 Sample meanμ=$15.00 Population…

Q: Suppose the null hypothesis, Ho, is: the mean age of the horses on a ranch is 6 years. What is the…

A: given null hypothesis is mean age of horses on a ranch is 6 years. Type-II error is when we fail to…

Q: how should a decision that fails to reject the null hypothesis be​ interpreted?

A: The dean of a major university claims that the mean number of hours students study at her…

Q: 24. A. B. C. D. Which of the following is FALSE? If the null hypothesis states that there is no…

A: Which of the following is FALSE?A.If the null hypothesis states that there is no difference between…

Q: we are going to run a hypothesis test based on a claim made by an insurance provider. Read the…

A: The customers save at least, on average, 300 dollars per year by switching to them, with a standard…

Q: A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were…

A: Given data 39 62 72 115 138 143 147 152 238 290 340…

Q: To investigate possible gender discrimination in a firm, a sample of 100 men and 64 women with…

A: The given information is,Average Salary Standard deviation Men$3100$200100Women$2900$32064

Q: Suppose 450 subjects are treated with a drug that is used to treat pain and 140 of them developed…

A: Given Information: Sample size n=450 subjects Out of which x=140 developed nausea. Significance…