You may need to use the appropriate appendix table or technology to answer this question. LSAT test scores are normally distributed with a mean of 150 and a standard deviation of 10. Find the probability that a randomly chosen test-taker will score between 120 and 170. (Round your answer to four decimal places.)

Q: Americans spend an average of 5 hours per day online. If the standard deviation is 33 minutes, find…

A: Given,Mean, μ = 5 hours = 5×60 = 300 minutes.Standard deviation, σ = 33 minutes.We need to find the…

Q: Most graduate business schools require applicants to take the GMAT. Scores on this test are…

A: Given that mean = 545 and standard deviation=100 We have to find the score for which 5% of the…

Q: Use the magnitudes (Richter scale) of the 120 earthquakes listed in the accompanying data table. Use…

A: Given Information:- 3.28 2.80 2.84 1.95 1.68 2.51 2.44 3.45 3.94 1.60 2.88 1.62 2.59 3.96 2.49 2.42…

Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

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Q: You may need to use the appropriate appendix table or technology to answer this question. A…

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Q: Find the standard deviation for the population data set. You must clearly show your work with…

A: Given data 2, 5, 9, 11, 13 Mean,  x = ∑i xin= 2+5+9+11+135 = 8 xi (xi-x¯) (xi-x¯)2 2 -6 36 5…

Q: Reading scores. The grade-level reading scores from a reading test given to a random sample of 12…

A: From the provided information, Sample size (n) = 12

Q: The GMAC Insurance company reported that the mean score on the National Drivers Test was 67.5 with a…

A:

Q: Jim and Pat are both taking Calculus. Jim scored 92 on a test in his class. The average on the test…

A: To find: Who actually did better? Include the Z-scores as part of the answer.

Q: Suppose a variable is normally distributed. What percentage of scores fall between one standard…

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Q: Scores on a test have a mean of 6 and a standard deviation of 9. Michelle has a score of 57. Convert…

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Q: Decide if the following statement is true or false. Explain why. It is possible to have a standard…

A: We need to decide if the given statement that " It is possible to have a standard deviation of -2…

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

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Q: Jason scores 380 on the Math SAT. (SAT scores have mean 500 and standard deviation 100.) Jason's…

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: Trucks in a delivery fleet travel a mean of 130 miles per day with a standard deviation of 39 miles…

A: The data on per day mileage of a delivery truck is normally distributed. Population mean, Population…

Q: what is the probability that you will receive a grade that is between 89 and 97 on this exam?

A: The mean of grades for the latest statistics exam is 93 and SD is 4.

Q: The average score of this quiz is 24 points with a standard deviation of 1.5 points. What is the…

A: Let us assume that X=score of a quizX follows a normal distribution with mean=24 and standard…

Q: Find the mean, variance and standard deviation. round all answers to on decimal place.

A: The mean of the variable X obtained as given below: Here, X denote the observation.

Q: people where sampled and their heights were recorded, it was discovered mean height was 5 feet and…

A: Given that  Population mean μ =5 feet 6.3 inches =66.3 1feet=12 inches  5feet=12×5=60+6.3=66.3…

Q: Trucks in a delivery fleet travel a mean of 110 miles per day with a standard deviation of 35 miles…

A: Let X be the miles driven per day by a truck.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 105   and a standard…

A: It is given that the mean and standard deviation are 105 and 15, respectively.

Q: Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A: Given: Population mean (µ) = 100 Population standard deviation (σ) = 15

Q: Trucks in a delivery fleet travel a mean of 80 miles per day with a standard deviation of 35 miles…

A: We denote the mean by the symbol  and the standard deviation by the symbol . It is giventhat  and…

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: According to a company's website, the top 10% of the candidates who take the entrance test will be…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A:

Q: Find the mean, variance and standard deviation. round all answers to on decimal place.

A: Solution: Suppose two dice rolled. Then, the sample space is Let X be the sum shown on the two…

Q: To qualify for a medical study, an applicant must have a systolic blood pressure in the 50% of the…

A: Given data ,μ=120σ=3z-value at 50% confidence isz∝12=0.674

Q: The average score of this quiz is 24 points with a standard deviation of 1.5 points. What is the…

A: Given data,μ=24σ=1.5P(X<21.9)=?

Q: The GMAC Insurance company reported that the mean score on the National Drivers Test was 77.8 with a…

A:

Q: Find the mean, variance and standard deviation. round all answers to on decimal place.

A:

Q: Trucks in a delivery fleet travel a mean of 90 miles per day with a standard deviation of 23 miles…

A: Given that The mean of 90 miles per day with a standard deviation of 23 miles per day.

Q: Assume that adults have IQ scores that are normally distributed with a mean of u 105 and a standard…

A: Given that, Mean = 105 and Standard deviation = 15

Q: A population has a mean of 125 and a standard deviation of 16. A sample of 64 observations will be…

A: The known values are, The probability that the sample mean will be between 122.6 and 126.5 is,

Q: In a study 10 people were given a test. The mean test score was 78.9 points. The standard deviation…

A: Given: Sample size n = 10 Sample mean X = 78.9 Sample standard deviation s = 5.2 Formula Used: X =…