Which of the following is the correct formula for converting a z score to a raw score? Which of the following is the correct formula for converting a z score to a raw score? X=(Z)(SD)+M X=(M)(SD)+Z X=(Z-M)/SD X=(Z-SD)/M X=(M)(Z)+SD

Q: One sample of scores has a mean of M = 45 and a sample size of n = 10 scores.  A second sample of…

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Q: What percent of data is less than -8%

A: here we can see that shape of curve is bell shaped and symmetric about x = -6 so it is normal…

Q: Monday at the local elementary school each grade level was asked their favorite flavor of ice cream-…

A: Given info: Monday at the local elementary school each grade level was asked their favorite flavor…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

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Q: A grocery store manager wants to know if displaying cranberries near the entrance to the store…

A: P1 : Proportion of shoppers who buy Cranberries when they are near the store entrance. P2 :…

Q: What does a z-score tell you about a data value?

A: Solution: Let X be the random variable. The z-score is the standardized value of the given data.

Q: Which z-score is the nearest to the mean? +0.50 +0.75 +1.00 -0.25

A: We will find z-score is the nearest to the mean? +0.50 +0.75 +1.00 -0.25 ?

Q: One sample with n = 4 scores has a mean of M = 12, and a second sample with n = 6 scores has a mean…

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Q: Heights of NBA All-Star players are normally distributed. 97.5% of players have a height of 85…

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Q: What is the formula to find weighted mean.

A: Weighted Mean: A mean in which some values are more important than others.

Q: Data is given as per    40,   80,  100.   If the first two are equally important and the third (100)…

A: Given data: 40, 80, 100 First two are equally important and the third (100) is half as important as…

Q: True or False: The mean is the same thing as the average

A: Given that Mean is same thing as average

Q: A cardiologist wants to determine whether there is a change in blood pressure when her patients are…

A: Given : n=45 , x(sample mean of the differences ) = -2 mmHg ,  s(sample standard deviation) = 0.4…

Q: how to find the find the p value of a data table

A: To find p-value, test statistic and hypothesis must be known.

Q: Find the variance for the set of data: 27, 33, 20, 25, 25. The variance is ***

A: Solution: x x2 27 729 33 1089 20 400 25 625 25 625 --- --- ∑x =130 ∑x2 =34685

Q: 6.9 7.0 7.3 7.3 7.7 7.7 7.8 D Bank A (single line): 6.6 6.6 6.7 Bank B (individual 4.4 5.4 lines):…

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Q: What are the limitations of the mean

A: A.M is a ratio of sum of observations to the number of observations.

Q: The battery life of the new iPad Mini introduced Apple is uniformly distributed between 8.5 and 12…

A: Formula is:

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

A: Denote p1, p2 as the true population proportions of men and women who own cats, respectively.

Q: 97 71 80 29 71 55 44 76 d. What is the mean (T) of this data set? e. What is the median of this data…

A: arrange data in accending order: 29,44,55,56,68,71,71,76,80,97   sample size (n) = 10

Q: A professor grades students on four tests, a term paper, and a final examination. Each test counts…

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Q: Given x = 0, 1, 2, 3, 4, 5 how is the mean 1.5? Shouldn't the mean of x be 2.5?

A: Measures of Central Tendency: A measure of central tendency represents the central value or typical…

Q: Describe when you would use an analysis of variance versus an independent samples t-test.

A: Analysis of variance (ANOVA) is used when we have more than two independent samples whereas…

Q: What's the Z score and how is it calculated?

A: We know z-score is used in many fields. But we should know what is the meaning of z-score and how to…

Q: Researchers want to know which food chain makes people the happiest. Researchers randomly assign…

A: For the given data, we need to find the mean squares between.

Q: Q3: Calculates Mean, Median, Mode, Variance and Coefficient of variation. Also show that: Q1 = P25,…

A: Please find the solution below. Here we should find Mean, Median and Mode.

Q: How do you compute median in Excel?

A: Enter the given data in first column of excel sheet.

Q: how did you find the Z score?

A: The critical value  of z for 97% confidence  interval  is 2.17.

Q: Joselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored…

A: Mean= sum of total obervation/ total no. Of observation

Q: Q2: For the following data :- 1,20,15,12,15,15,10,12,10,2,17,60,40,20,30,25,20 (A)Find the median…

A: The median is the mid-value of the ordered dataset. The mode is the value that is repeated maximum…

Q: Si ), ms w5.16. The mean of marks in Statistics of 100 students in a class was 72. The mean of marks…

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Q: P-Value means

A: P- value means: Define: The P value is defined as the probability under the assumption of no effect…

Q: Q4: Find for the following data (7, 3,5,6,2,8,4) the mean absolute deviation, variance and standard…

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