John finds that there is a scholarship available to all persons scoring in the top 5 % on the ACT test. If the mean score on the ACT is 21 with a standard deviation of 4.7, what score does he need in order to qualify for the scholarship?

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A: The summary of the statistics is, The type of test is left tailed test

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A: Given: μ=75 and σ=7. The z-score is calculated asz=x-μσ

Q: A data set is formed by recording the sums in 400 rolls of a pair of a dice. A second data set is…

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Q: A pre-med student in a statistics class has to do a statistics project. She plans to test the claim…

A: Solution

Q: We are interested in the mean migration distance of Canadian geese. Suppose that we know that the…

A: Sample size n =25 Population mean μ =2500 Population standard deviation =250

Q: find the margin of error of a 99% confidence interval for the mean score of all student

A: It is given that  Sample mean = 93 Sample standard deviation, s = 7 Sample size, n = 30

Q: A car salesperson offers you a car at the price of $22,895. You look up the mean sales price for…

A: We have given that the random variable X that is sales price. Here, X = 22895 Mean = 21900 and…

Q: You are are running some stats on final game scores during March Madness games. The 16 teams that…

A: given data μ = 70.8σ = 12.4x = 80z = ?

Q: The Z-score for 1420 is (Round to two decimal places as needed.) Which values, if any, are unusual?…

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Q: 11. MENSA, the high IQ society, only accepts membership into their organization if an applicant's IQ…

A: Given Data Population Mean,μ = 100.0 Population Standard Deviation,σ = 15.0

Q: 5 Colton and Jake began arguing about who did better on their tests, but they couldn't decide who…

A: Given information English class Colton Marks x = 72.9 Mean µ = 76.7 Standard deviation σ = 8.9 Art…

Q: 500 freshmen at Arundel University took part in a math comprehension test. The scores were normally…

A: From the provided information, Population size (N) = 500 Mean (µ) = 75 Standard deviation (σ) = 7…

Q: The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the…

A: PART A SOLUTION:Step 1: Determine What is AskedWe are given that the mean score for U.S. college…

Q: A basketball coach is considering starting one of four players who each have about the same shooting…

A: Which option is the correct choice

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A: Given: Mean μ=50 Standard deviation σ=10

Q: For 100 randomly selected adults, compute the mean and standard deviation?

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Q: Explain the term "deviation scores"?

A:

Q: 3) A researcher records the following scores on a working memory quiz for two samples. Which sample…

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Q: ketch a bell curve for the ACT composite data with markings on the horizontal axis for ±1 standard…

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Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: A test consists of 980 true or false questions. If the student guesses on each question, what is the…

A: Given :  n = 980 Since the questions are true or false type questions, there will be only two…

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A: Formula : Test statistic :

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.