For any normal distribution, exactly 97.50% of the z-score values are less than z = 1.96. Question 8 options: True False

Q: For a distribution, the mean was The z-score for a value is negative, which of the following…

A: Z-score is the number of standard deviations, a given data point lies from the mean.

Q: If a student scored 70 points on a test where the mean was 66 and the student's z-score was 0.42,…

A:

Q: If data came from a normal distribution, what fraction of the data will be classified as outliers…

A: Normal and Bi-Nomial Distribution:             Normal distribution is a bell shaped curve…

Q: You have a normal distribution of test scores with a mean of 100 and an SD of 15. Use the empirical…

A: given data normal distributionμ = 100σ = 15use empirical rule to answer . What range of scores…

Q: What z score, in a normal distribution, corresponds to Q1?   0.25 0.67 -0.67 correct answer is not…

A: First quartile:The first quartile is the middle-most observation or median of the lower half of the…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: The random variable cost of living follows normal distribution. There are two dependent samples…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A:

Q: A sample of n = 8 scores has a mean of M = 12. What is the value of  ∑X

A:

Q: It is given that the mean and the standard deviation of the loss are -2.8 and 7, respectively. Based…

A: Let X be a random variable such that X: Loss amounts X~N(−2.8,72) Now, 90% VaR is given as…

Q: Which of the following statements regarding Z scores is FALSE? a. It indicates whether the raw score…

A: X is a random variable that follows the normal distribution with mean μ  and SD σ then the z score…

Q: In a normal distribution, what z-score cuts off the top 15% of the distribution?

A: We will use Standard Normal table to determine the required z-score.

Q: 1. For a normal distribution, find the percent of scores that lie between the scores having z values…

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Q: On average, a banana will last 6.1 days from the time it is purchased in the store to the time it is…

A: X : Time to spoil if banana is hung from the ceiling n=13 X=(7.4, 7.5, 7.9, 5.7, 5.9, 8.1, 4.8, 8.7,…

Q: Q2. The 30% trimmed mean of the following data {120, 150, 170, 177, 178, 193, 198, 250, :450, 955}…

A:

Q: On average, a banana will last 6.1 days from the time it is purchased in the store to the time it is…

A: given data : 5.5,6.6,5.1,8.4,7.1,5.1,4.8,5.1,8.1,5.4,7,7.8 from the above given data…

Q: In a normal distribution, it is found that the mean is 56 and the standard deviation is 5, Find the…

A: We want to find the range of the values