. Scores on an exam are normally distributed with a mean of 155 and a standard deviation of 15; find the percent of the scores for each scenario (hint, you should change the following scores to Z scores) P Greater than 45 At least 100 Between 54 and 170

Q: Describe a distribution of scores that has a mean of M 5 30 and a standard deviation of SD 5 6.…

A: From the given information we describe the distribution.

Q: Molly's score was 68 on a test with a mean of 80 and a standard deviation of 9.  What is her…

A:

Q: Find the IQ Score.  IQ score  0.3446 Distributed with a mean of 100 and a standard deviation of 15.…

A: Given DataMean = 100Standard deviation = 15Probability of IQ score of adults = 0.3446

Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

A:

Q: IQ scores have a mean of 100 and a standard deviation of 15. What percentile corresponds to an IQ…

A: Given that Mean =100  Standard deviation =15  We have to the percentile  corresponding to an IQ…

Q: Identify the data value corresponding to the indicated percentile. The heights of women are normally…

A: According to the provided information,

Q: People with z-scores about 2.5 on an IQ test are sometimes classified as geniuses. If IQ scores have…

A: The z-score denotes how many standard deviations away from the mean a raw score is The z-score can…

Q: Molly earned a score of 920 on a national achievement test. The mean test score was 825 with a…

A: Given that, The proportion of students had a higher score than Molly is,

Q: The scores at a golf course recorded last year followed a normal distribution with mean 78 and…

A:

Q: Angela polled her first grade class about their family pets. The following data lists the number of…

A:

Q: Scores for a civil service exam are normally distributed, with a standard deviation of 8. To be…

A:

Q: The mean score on the ACT test was 23.7 and the standard deviation was 5.8. The distributions of…

A: Given: Mean = μ = 23.7 Standard deviation = σ = 5.8

Q: The GMAC Insurance company reported that the mean score on the National Drivers Test was 67.5 with a…

A:

Q: On a nationwide test taken by high school students, the mean score was 53 and the standard deviation…

A:

Q: There are two major tests of readiness for college, the ACT and the SAT. ACT scores are reported on…

A: From the provided information, For ACT score: Mean (µ) = 21.5 Standard deviation (σ) = 5.4 For SAT…

Q: Suppose you were told you scored two standard deviation below the mean on a measure where the main…

A:

Q: Scores on a test have a mean of 6 and a standard deviation of 9. Michelle has a score of 57. Convert…

A:

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

A:

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

Q: a. Which player had the higher average points when compared to the other players on his team?

A:

Q: A statistician was exploring a set of data representing a group of 121 women.  The mean was 49 and…

A: Sample size, n = 121 Mean = 49 Variance σ2 = 9 We have to find the standard deviation.

Q: Use the normal distribution of IQ scores, which has a mean of 75 and a standard deviation of 18 ,…

A: X~N(μ=75,σ=18)

Q: Human pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15…

A: The mean is 267 days and the standard deviation is 15 days.

Q: What was the cutoff for a failing score? Approximately what percentage of the students failed?

A: The scores on a psychology exam were normally distributed with a mean of 68 and a standard deviation…

Q: The golf scores for a school team were normally distributed with a mean of 68 and a standard…

A: Let X be the golf scores. It is given that X is normally distributed with mean 68 and standard…

Q: he scores on a psychology exam were normally distributed with a mean of 65 and a standard deviation…

A: Given,μ=65σ=6

Q: Assume that adults have IQ scores that are normally distributed with a mean of 105   and a standard…

A: It is given that the mean and standard deviation are 105 and 15, respectively.

Q: The scores on a standardized test are normally distributed with a mean of 95 and standard deviation…

A: Let "X" be the test score. Find z-score (z): The z-score is the measure of how far the standard…

Q: Assume the test scores in your class are normally distributed with a mean of 84. You scored a 96,…

A: Given: mean = 84.

Q: a quantitative data set has mean 25 and standard deviation 2. approximately what percentage of the…

A: The given data is as follows:Population mean, Population standard deviation,

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: On a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what…

A: Given data,Mean μ=72sd      σ=7If John scored 75z-score=?

Q: The distribution of the scores on a standardized exam is approximately normal with mean 400 and…

A: The two values of Z that will contain 50% of scores lie are obtained as shown below:From the…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of​ adults, and those scores…

A: IQ scores are normally distributed, Mean = 100 Standard deviation = 15

Q: Let’s assume that weight is normally distributed with a mean of 160 and a standard deviation of 25…

A: Step-by-step procedure to obtain the middle 80% 0f all people lie between which two weights using…

Q: A quantitative data set as a mean of 24 and a standard deviation of 2. What percent of the…

A: Given,Mean, = 24Standard deviation, S = 2Using formula (Chebyshev's theorem),Chebyshev's theorem…

Q: The GMAC Insurance company reported that the mean score on the National Drivers Test was 77.8 with a…

A:

Q: The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

A: