You are given that X is normally distributed witha  mean of 50.2 and a standard deviation of 3.7 a) What proportion of the population lies between 47 and 52 b) What is the value of the 95 percentile? c) What is the z score for the data value of 43.7

Q: Assume the average price of a laptop computer is $750 with a standard deviation of $75. The…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Use the following data to answer the first two questions. The test scores for a sample of five…

A:

Q: A standardized memory test has a mean of µ = 100 and a standard deviation of σ = 10. Answer the…

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Q: c) How many of the 15 data values fall within one standard deviation of the mean? Show how you found…

A: According to empirical rule, 68% of the data lie within 1 standard deviation of the mean.  Thus, if…

Q: a. Suppose a 15 to 18-year-old male from Chile was 176 cm tall from 2009 to 2010. The z-score when x…

A: Given that Let X denotes the height of a 15 to 18 year old male from Chile in 2009 to 2010 X~N(170,…

Q: A histogram is used to understand:

A: Histogram describes the frequency of the data using bars.

Q: A survey found that women's heights are normally distributed with mean 63.2 in. and standard…

A: Given that : For Women Standard deviation =2.6 inch μ=63.2 inch For men : Standard deviation =3.5…

Q: What is the minimum percentage of data values that will come within 3.5 standard deviations from the…

A: Here, standard deviation = k = 3.5

Q: 18. For the z-scores below, find the percentile rank (percent of individuals scoring below): a.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A variable is normally distributed with mean 36 and standard deviation 13. Use the Cumulative…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: In order to estimate the average time spent per student on the computer terminals at a local…

A: sample size(n) = 81population standard deviation = 1.5 hoursstandard error for mean = ?

Q: A standardized memory test has a mean of µ = 100 and a standard deviation of σ = 10. Answer the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Assume the cholesterol levels of an adult can be described by a Normal model with a mean of 185…

A: The mean of the distribution,  mg/dLThe standard deviation of the distribution, “Since you have…

Q: Use the data to answer the following questions: 10; 11; 15; 15; 17; 22 What number is two standard…

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Q: Assume that the values x below, represent data collected for a population. Calculate the summary…

A: For the given data mean =? s.d =? variance =?

Q: Which of the following statements about z scores is correct? A. z has the same unit of measurement…

A: We know the formula of z is=X-meanSD. So z has no unit.  So it can not be the same as the unit of…

Q: standard deviation is s = 16.8 beats per minute. a. What is the difference between the pulse rate of…

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

Q: For bone density scores that are normally distributed with a mean of 0 and a standard deviation of…

A: We have to find given probability.

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A: The no. of considered airports, n=50. The highest measured data speed is 71.9 Mbps. For the…

Q: Suppose scores on the final exam for Principles of Statistics have mean of 60 and standard deviation…

A: Solution

Q: a) Find the mean? b) Find the median? c) Find the mode?

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPARTS  The following data was the exam scores (out of 100…

Q: Question 1: A hospital in a large city records the weight of every infant born at the hospital. The…

A: Given : Mean=2.9 Standard deviation =0.45   Note:As per guidelines only first 3 subparts of the…

Q: We are going to calculate the standard deviation for the following set of sample data. 1) First,…

A:

Q: We are going to calculate the standard deviation for the following set of sample data. 1) First,…

A: Number of samples (n) =5

Q: with peas having the property that for offspring, the offspring peas are randomly selected in groups…

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: 2. What percent of values of a normally distributed variable lie between the mean and two standard…

A: Given: Let X be the random variable X~ Normal ( μ, σ2)