n exercise 2. 3 12 12 6 20 20 14 Y; 55 40 55 10 15 deviation of when x = 8. interval for the expected value of y when deviation of an individual value of y when n interval for y when x = 8.

Q: A score of is 3 standard deviations above the mean.

A: Let , X→N(μ=140 , σ=28) Our aim is to find the score 3 standard deviation above mean

Q: When a Calculus professor is determining the curve for her final exam, she finds that the mean score…

A: Z= x-μσ~N(0,1)

Q: Assume that a normal distribution of data has a mean of 19 and a standard deviation of 2.Use the…

A: given data,normal distribution μ=19σ=2according to emperical rule 68%,95% and 99.7% data fall within…

Q: : Find mean deviation and standard deviation   C.I. 56 - 60 61 - 65 66 - 70 71 - 75 76 - 80…

A: The characteristics of the frequency distribution are, a measure of central tendency, a measure of…

Q: x = the number of days per week that 100 clients use a particular exercise facility. x Frequency 03…

A:

Q: A set of data items is normally distributed with a mean of 900 and a standard deviation of 30. Find…

A: The data item is normally distributed with     Mean, m = 900    Standard deviation, s = 30   Then,…

Q: Using R Suppose the distributions of arrival and service times were normal instead of exponential.…

A: The objective of this question is to estimate the long-run average number of people that would be in…

Q: Consider the following hypothesis test. Ηγ: μ 2 20 Hg: μ State your conclusion. O Reject Ho. There…

A: sample size(n)=50 sample mean(x¯)=19.1 population standard deviation(σ)=2 H0:μ≥20 Ha:μ<20 and…

Q: Investor A wants to maximize his expected return by investing some proportion in Stock Z which has…

A: Expected rate of return = 18% Standard deviation max = 25% Standard deviation of Z = 21%

Q: 68% of statistics Mean 95% of statistics 99.7% of statistics 4 Mean + Mean 1 st. 3 st dev 2 st. dev…

A: Solution-: Given: μ=177, σ=7.4 We want to find  (a) The range of height that contain approximately…

Q: JaJuan want to estimate the average student GPA at his high school. He surveys 37 students and finds…

A: Given,sample size(n)=37sample mean(x¯)=3.33population standard deviation (σ)=0.29

Q: A math class completes an exam and it is found that the class mean is 85 and the standard deviation…

A: The Chebyshev's theorem and Empirical rule is use to calculate the proportion or percentages of…

Q: Hugo averages 64 words per minute on a typing test with a standard deviation of 15 words per minute.…

A: Given , X∼N(64,15).

Q: Which of the following values represents the standard deviation of all possible means selected from…

A: In order to study the distribution of a random variable, we need to study it's measures of…

Q: Assumeing that math test scores are normally distributed with a mean of 200 and a standard deviation…

A: Let X denote the math test scores and it follows normal distribution with a mean of 200 and a…

Q: Explain the relationship between the Poisson and exponential distribution.

A: It is an application of probability distribution. It is widely used in statistics.

Q: Calculate the correct mean and standard deviation.

A: Here use standard deviation and mean formula

Q: Hugo averages 59 words per minute on a typing test with a standard deviation of 15 words per minute.…

A: From the provided information, Average (µ) = 59 Standard deviation (σ) = 15 X~N (59, 15)

Q: Coefficient 24 From the following data compute inter quartile range, quartile Deviation and of…

A:

Q: Hugo averages 72 words per minute on a typing test with a standard deviation of 13 words per minute.…

A: Given that , mean =  = 72 standard deviation =  = 13 x = 69

Q: botanist wants to see the effect of sound at 2 Hz frequency in a certain group of algae. From prior…

A: A botanist wants to see the effect of sound at 2 Hz frequency in a certain group of algae. From…

Q: Which of the following statements correctly explains what happens to the variability of a…

A: The Student t distribution is generally bell-shaped, but with smaller sample sizes shows increased…

Q: The amount of potassium in food varies, but bananas are often associated with high potassium, with…

A:

Q: x = 0,1,2,3,4 p(x) = 0.0, 0.1,0.2,0.3,0.4 can you please find mean and standard deviation

A:

Q: After 3 points have been added to every score in a sample, the mean is found to be M= 83 and the…

A: After 3 points have been added to every score in a sample, the mean is found to be M= 83. The value…

Q: Temperature in degrees Fahrenheit has been collected from a sample of 50 individuals. The mean is…

A: Given n=50, sample mean x̄=98.5,  standard deviations σx=3.2

Q: n=16  mean number of  television per household is 4 with a standard deviation of 1 television. using…

A: Chebyshev's theorem and empirical rule are used to calculate the percentages of data lies within…

Q: Suppose in 2000, the science scores for female students had a mean of 146 with a standard deviation…

A: It is given that Mean, μ = 146 Standard deviation, σ = 35 Z-Score, Z = ( X - μ )/σ where, Z be the…

Q: What value of x is two standard deviation to the right of the mean if X ~ N(10, 1)? O 1 O 2 O 4 0 6…

A:

Q: You determine that the standard deviation for a sample of test scores is 0.  This tells you that 1…

A: The standard deviation value is 0.

Q: An instructor of statistics claims that students in his section will score smaller than the students…

A: Given,n1=33  ,  x¯1=25.5  ,   s1=4.1n2=31  ,  x2¯=26.7   ,  s2=4.5α=0.01