Suppose you scored 85, 86, 83, and 74 O on your four exams in a mathematics course. Calculate the range and standard deviation of your exam scores. Round the mean to the nearest tenth to calculate the standard deviation. The range of the exam scores is (Simplify your answer.)

Q: In the diagram, about 68% of the scores fall within the shaded area, which is symmetric about the…

A: For 68%; Range can be given as Mean +/- SD

Q: The lowest and the highest data value of a data set are 12 and 28 respectively, then the approximate…

A:

Q: Observe the values of the means and standard deviations in the four samples you gathered and list as…

A: Simple random sampling is the technique of selecting the in such a way that way each sample has an…

Q: In a memory test, the test subjects are shown 625 objects and are asked after two hours to name the…

A: Given,          sample size n=625           sample proportion P∧=80%=0.80       A)    Mean=P∧…

Q: n a final examination in mathematics, the mean was 72 and the standard deviation was 15. Determine…

A: Given : On the final examination in Mathematics ; Mean (μ) = 72 Standard deviation (σ) = 15 Let X be…

Q: Suppose you scored 85, 86, 83, and 74 D on your four exams in a mathematics course. Calculate the…

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Q: Salespeople for a car sales company have an annual sales average of $225,000, with a standard…

A:

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: Given,

Q: The mean is μgirl(s). (Round to one decimal place as needed.) The standard deviation is a = girl(s).…

A:

Q: Need asap   For a medical study, a researcher wishes to select people in the middle 75% of the…

A:

Q: The Minnesota Twins have scored the following number of runs: 4, 3, 2, 2, 2, 12, 0, 3, 4, 1. Find…

A: Explanation: In DESMOS Calculator: Go to Functions Functions > Stats > stdev.

Q: Seven students on an intramural team weigh 179 lb, 172 lb, 174 lb, 185 lb, 162 Ib, 181 Ib and 193…

A: According to the provided information, the sample weights are 179, 172, 174, 185, 162, 181, 193

Q: Suppose you scored 81, 78, 77, and 86 O on your four exams in a mathematics course. Calculate the…

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Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A: Given: Data 85 70 25 68 53 74 31 52 58 52 44 33 86 38 47 44 43…

Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A: We have given that,  The data set is,  60 67 82 49 51 78 48 49 71 48 59 23 42 68 26 55 57 55 23 26…

Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A: Given information- We have given the table below gives the number of hours spent watching TV last…

Q: An airline charges $25 for the first bag, $35 for the second bag 54% have no checked baggage,  34%…

A:

Q: The tourist bureau of the Caribbean Island surveyed a sample of 6 United states tourists as they…

A:

Q: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given that,The middle 68% of the scores fall between 77 and 93.

Q: Given the data: 47, 55, 57, 63, 73. Find the standard deviation. Round the final answer to the…

A:

Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A: Given data: 64 59 67 40 53 55 48 65 73 47 67 48 78 49 84 74 37 73 80 88 47 40 92 10

Q: In a Science test, the mean is 46 and the standard deviation is 4. Assuming the scores are normally…

A:

Q: The tourist bureau of the Caribbean Islands surveyed a sample of 5 United States tourists as they…

A: Let X denote the number of days spent on visit.  Given that n = 5

Q: Lara wants to know if the number of words on a page in her English book is generally more than the…

A: Given information: The values of mean for the English and history books are 48.9 and 40.5,…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A:

Q: Which would you expect to be the larger standard deviation: a. The standard deviation of the weights…

A:

Q: The average life of a car tire is 50,000 miles.  The standard deviation is 2,000 miles   What…

A: Normal distribution, also known as the Gaussian distribution, is a probability distribution that is…

Q: In a particular examination, the mean score is 82 and the standard deviation is 3.7. What is the Z-…

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Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A: Given information- We have given the table which shows the number of hours spent watching TV last…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: According to the provided information, Mean (x̅) = 263 Standard deviation (σ) = 15 Significance…

Q: The data below represents the total number of points each hockey team in the NHL Eastern conference…

A: Given data is {52,66,84,88,93,100,101,117}find the standard deviation

Q: The northern lights (or Aurora Borealis) appear on some nights during the winter in Alaska. The…

A:

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: Given Solution: The following is the data provided:

Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A:

Q: If some data is symmetrical and unimodal, and the mean and standard deviation are 230 and 40…

A: If the data is symmetrical and unimodal, then it is normally distributed with mean, μ=230 and…

Q: If the mean height of a full-grown Wookie is 83 inches with a standard deviation of 4 inches, what…

A: Mean=83 Standard deviation =4 Z score =? For x=88

Q: Using your calculator, find the range and standard deviation, round to two decimals places! The…

A: Given data set: 85, 33, 60, 45, 53, 46, 58, 47, 22, 44, 71, 83, 62, 79, 43, 36, 56, 39, 65, 36, 81,…

Q: On a standardized test, Sara had a score of 93, which was exactly 2 standard deviations above the…

A: The normal distribution in the center is generally denser and basically less dense at tails. There…

Q: Given the following scores of students in a test: 5,7,11,12,13,18 a) add 8 to each score then find…

A: Given that  The data are 5,7,11,12,13,18

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: The random variable score X is normally distributed and middle 68% of values fall between 71 and 83…

Q: On a standardized test with 85 and the standard deviation is 3. Within which range should…

A: Given mean, μ = 85 standard deviation, σ = 3

Q: Ronnie and Loida who are best friends took a college entrance examination. The mean score and the…

A: The z score is used to estimate the number of observation deviation from the mean. The z score is…

Q: The mean critical reading score for seniors who took the SAT in 2018 was 536. If the standard…

A: Given Mean μ=536, standard deviation σ=115  X=435

Q: The tourist bureau of the Caribbean Island survey a sample of 6 United States tourists as they left…

A: The mean number of days spent on the visit can be calculated as:

Q: Find the standard deviation of -2, 7.2, 6.9, -10.4, 5.3. O a. 6 O b. 7 O C. 6.78 d. 6.9 O

A: Data given -2,7.2,6.9,-10.4,5.3

Q: Valentina obtained a score of 75 in a science exam and 90 on her English exam. on which test did she…

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Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given : The middle 68% of the scores fall between 71 and 79 P(71<X<79)=68%

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: Given data,   Mean=? Standard deviation =?