For a medical study, a researcher wishes to select people in thr middle 75% of the population based on blood pressure. If the mean systolic blood pressure is 120 and the standard deviation is 8, find the upper and lower readings that would qualify people to participate in the study.

Q: The scores on the board are Normally distributed with a mean of 67 and a standard deviation of 13.…

A: From the provided information,X~N (67, 13)The bottom 5% of students will fail.

Q: It takes an average of 8 minutes for blood to begin clotting after an injury. An EMT wants to see if…

A:

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 95 percent of…

A: Given data:  average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 95 % of all…

Q: Test scores for a history class had a mean of 89 with a standard deviation of 8.9. Suppose a student…

A: According to the given information, we have Mean = 89 Standard deviation = 8.9 Raw score = 67

Q: Carol-Anne is an environmental scientist studying the heights of red oak trees in a nearby marsh and…

A: It is given that the researcher randomly selected 10 red oak trees from each habitat and records the…

Q: A recent poll found that 59% of adults believe the state of moral values is poor. For 400 randomly…

A: Here, n = 400 and p = 0.59

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: The Final exam average for an Biology class is normally distributed with a mean of 58% and a…

A: From the provided information, Population size (N) = 2051 students Mean (µ) = 58% Standard deviation…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 254 cm.…

A:

Q: a bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean…

A: We have to find 60th percentile.

Q: Suppose that resting pulse rates of adult males are normally distributed with a mean of 72 beats per…

A: The following information has been provided: Let X be a random variable represents the resting pulse…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: On a national achievement test score was 850 with a standard deviation of 100. What proportion of…

A:

Q: scores are normally distributed with mean 500 and standard deviation 100. Julie scores 650. Her…

A: Consider X be the random variable representing the SAT scores. X follows normal distribution with…

Q: You measure the height of 10 people and come up with an average of 70 inches and a standard…

A: x=70s=4n=10 The t scores for 68 inches, t=68-xsn=68-70410=-1.581139

Q: It takes an average of 9.9 minutes for blood to begin clotting after an injury. An EMT wants to see…

A: From the provided information,

Q: It takes an average of 8 minutes for blood to begin clotting after an injury. An EMT wants to see if…

A: Given The data is as follows: Pop. mean, μ=8Sample size, n=62Sample mean, x¯=7.8Sample sd,…

Q: A particular fruit's weights are normally distributed, with a mean of 344 grams and a standard…

A: Given X is normal Distributed with mean µ = 344.0 and standard deviation σ = 8.0 now will use…

Q: On a spelling test, the standard deviation is equal to 0.94. What does this mean

A: We know that the Standard deviation tells us that how much data is scattered around the mean value…

Q: A researcher collects the distances between survey respondents and the closest grocery store. The…

A:

Q: The cruising altitudes for the fleet of one commercial airliner are normally distributed with a mean…

A: It is given that the mean is 34,950 and the standard deviation is 1,800.

Q: In a standardized exam the mean score is 400 with a standard deviation of 50. Assume the scores…

A: Solution

Q: A test score of 45 has an equivalent standard score (z-score) of 1.6. If the mean test score is 39,…

A: given dataraw score  x = 45standard score   z = 1.6mean μ = 39S.D.  σ = ?

Q: The average age of senators in the 108th Congress was 60.5 years. If the standard deviation was 13.5…

A:

Q: Last year, the mean salary of accounting clerks was $29932. If we assume that the annual salaries…

A: Given Data: Let X represent the random variable   X~ Normal (29932, 18502)

Q: Find the standard deviation if the mean = 2, mode = 5, variance = 56 . Round your answer to three…

A: We have given that,  Mean (x̄) = 2 , mode (z) = 5 and variance        (s^2) = 56 Then,  We will find…

Q: A teacher wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10%…

A: Here we need to find the mean, median and mode for the given normal distribution. Also we need to…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

Q: The mean of a test score was 21.2 and the standard deviation was 5.1 . Identify the rest scores that…

A: Given Data Mean µ= 21.2. Standard Deviation σ= 5.1. Assuming that the given data is obtained from a…

Q: Scores on a test have a mean of 8181 and a standard deviation of 1313. Michael has a score of 9393.…

A:

Q: Write the steps of calculating the population standard deviation.

A: Standard deviation: The standard deviation is based on how much each observation deviates from a…

Q: It takes an average of 8 minutes for blood to begin clotting after an injury. An EMT wants to see if…

A:

Q: Sally had a z score of +0.25 on a test with a mean of 62 and a standard deviation of 5. What was her…

A: From the provided information,Z score = +0.25

Q: standardized test has a pop. mean of 152 and a standard deviation of 16. Jenny has a z score of…

A: Given that n=500, z=-0.56

Q: The mean height of males 20 years old or older is 69.1 inches with a standard deviation of 2.8…

A: given data x = height of 20 years old or older μ = 69.1  inchesσ = 2.8 incheskevin's height,x = 83…

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

Q: Solar earned a score of 940 on a national achievement test. The mean test score was 850 wth a…

A: Given that  Solar earned a score of 940. The test scores are normally distributed. Mean test score…

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: GivenMean(μ)=1457standard deviation(σ)=315

Q: Jennifer needs to estimate the average age of vets in Houston. The standard deviation of ages is 17…

A: Given : Standard deviation (σ) = 17 Standard error (SE) = 0.3

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.