The mean time for a class of runners is 4.6 hr with a standard deviation of .35 hr.  If the times are normally distributed  P(x > 3.7) = Give a 4-decimal answer

Q: On an exam, Tom scores 12 points above the mean and has acore of z200. The standard deviation for…

A: Z-score is the value of the ratio of the difference between the raw score and the population mean by…

Q: On a recent quiz, the class mean was 77 with a standard deviation of 2. Calculate the z-score (to 2…

A: Solution-: Given: μ=77,σ=2,X=78 We want to find Z-score=?

Q: The average percent of correct responses on the midterm last semester was 78% with a standard…

A: Given that  Mean = M = 78 , Standard deviation = SD = 6 Z-score = 1

Q: On average, indoor cats live to 16 years old with a standard deviation of 2.6 years. Suppose that…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A: Let X denote the percent of fat calories that a person in America consumes each day is normally…

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: neigi a an of б9.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 79.5…

A: It is given that the mean is 69.0 and the standard deviation is 2.8.

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268.7…

A: Mean = 268.7 Standard deviation= 13.8 days  95% confidence

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of 79 beatsminute…

A: Given that population mean = 79 beats/minute population standard deviation = 10 beats/minute

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: The Z-score: The Z-score of a random variable, X, with mean μ and standard deviation σ, at the point…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267.8…

A: As we know that 95% of the data values in normal distribution lies between one standard deviation…

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: The amount of time spouses shop for anniversary cards can be modeled by an exponential distribution…

A: Let X is the amount of time ( in minutes ) that a randomly selected spouse spends shopping for an…

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of  79…

A: It is given that Mean = 79Standard deviation = 8

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: Given that  Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8…

Q: Ball-Bearings, Inc. produces ball bearings automatically on a Kronar BBX machine. For one of the…

A: It is given that the mean is 20 and the standard deviation is 0.150.

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Given data,μ=866σ=159P(X<862)=?

Q: The weights of men are normally distributed with a mean of 76 kg and a standard deviation of 8 kg…

A: Answer: From the given data, X follows normal distribution mean (μ) = 76 Standard deviation (σ) = 8…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 68…

A: Introduction: Denote Q1, Q2, Q3 as the three quartiles of the given distribution of scores in the…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days…

A: Solution-: Given: μ=267,σ=15 We find. P(X>312 days)=?

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: Mean(μ)=69.0standard deviation(σ)=2.8Man height (x)=72.4

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 70…

A: We are reauthorized to answer three sub parts at a time, since you have not mentioned which part you…

Q: On a recent calculus exam, a class mean was 75 with a standard deviation of 3.4. Calculate the…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 3.4 Let X be a random variable…

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of 80…

A: Here we are given that X: healthy adults have pulse rate /minute  = population mean =80 beats/minute…

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: The normal distribution is the most useful theoretical distribution for continuous variable.  For…

Q: To qualify for a police academy, applicants are given a test of physical fitness. The scores are…

A: Given : mean (μ ) = 62 standard deviation (σ) = 7                                  σ²  = 49

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: c. Find the minimum number for the upper quarter of percent of fat calories.

A: The mean is 38 and the standard deviation is 10.

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Let "X" be the combined SAT scores for the students at a local high school

Q: Heights of me are normally distributed with a mean of 176cm and a standard deviation of 7cm.what is…

A: here is given that, mean = 176   and standard deviation is 7 we will use z-standard normal…

Q: In a survey, the mean weight of 1005 rats was calculated to be 132 gr. The standard deviation of the…

A:

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A:

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of 79…

A: Based on the provided information, Mean=79 beats/minute Standard deviation=10 beats/minute

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A:

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: Given,mean(μ)=69standard deviation(σ)=2.8and X=61.1

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of  81…

A:

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30.…

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…