In the given situation below, identify the population standard deviation. “In a recent survey, the average amount of money a college student gets is ₱200.00 with a standard deviation of ₱62.00. A teacher feels that the average amount is higher. She surveys 80 randomly selected students and finds that the average amount is ₱245.”

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: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: A statistics professor gave a final exam to a class of 30 students. The exam scores are normally…

A: Given,mean(μ)=75standard deviation(σ)=10

Q: The mean assessed value of homes in Southern County is $158,000 with a standard deviation of…

A: Old mean = E(X) = 158000 Old SD = SD(X) = 32000

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

A:

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: In a given school year, the ACT test mean score was 21 with a standard deviation of 4.9.  The same…

A:

Q: he cost of laptops is normally distributed with a mean of $750 and a standard deviation of $60. What…

A: GivenMean(μ)=750standard deviation(σ)=60

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

A: From the provided information, Mean (µ) = 152 Standard deviation (σ) = 16 X~N (152, 16)  Nicole has…

Q: A Population has a Mean of 90 and a standard deviation of 25.  A sample of 20 college students is…

A:

Q: During one of the Kahana Resort’s “Trivia Nights,” 480 guests took the test on “Island Trivia.”  The…

A: Introduction: Define X as the random variable of interest here, which denotes the score obtained by…

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

A:

Q: A study studied the birth weights of 2,008 babies born in the United States. The mean weight was…

A: From the provided information, Total babies (N) = 2,008 Mean weight of babies (µ) = 3234 grams…

Q: The amount of income taxes that people owe each year varies greatly from person to person because…

A:

Q: Tossing Coins Find the mean, variance, and standard deviation for the number of heads when 19 coins…

A: Let X be the number of heads and n be the number of coins tossed.

Q: You want to know the percentage of financial services companies that earned revenue less than 8181…

A: The objective of this question is to find the percentage of financial services companies that earned…

Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

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

A:

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

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

A:

Q: Last year the revenue for utility companies had a mean of $60 million with a standard deviation of…

A:

Q: Ngan scored 1 standard deviation below the class average on a statistics exam. The class average was…

A:

Q: In an area when customers face technical difficulty with their Internet cable hookup may call an 800…

A: Given: a=30 secondsb=10 minutes

Q: The mean height of a basketball team is 6 feet with a standard deviation of 0.2 feet. The team's…

A:

Q: On a nationwide math test, the mean was 51 and the standard deviation was 4. If Roberto scored 85,…

A: We have given the mean and standard deviation of a nationwide math test.Mean μ = 51Standard…

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: a quantitative data set has mean 25 and standard deviation 2. approximately what percentage of the…

A: The given data is as follows:Population mean, Population standard deviation,

Q: On a nationwide math test, the mean was 57 and the standard deviation was 4. If Roberto scored 90,…

A: Formula for z-score is

Q: The three data sets listed below have the same mean and range. Compute the standard deviation for…

A: The given data sets are: Data set 1 Data set 2 Data set 3 5 5 5 7 6 5 9…

Q: A quantitative data set has mean 19 and standard deviation 2. Approximately what percentage of the…

A: Given that, A quantitative data set with, Mean = 19 Standard deviation = 2

Q: The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words…

A: Given: μ= 125 σ = 24 The formula pf z score is, Z=X-μσ The value of z at the 80th percentile, i.e.,…

Q: A population has a Mean of 100 and a standard deviation of 15.  A sample of 20 college students is…

A: Given information- Population mean, µ = 100 Sample mean, x-bar = 125 Population standard deviation,…

Q: If the range of a data set is 64, find the approximate value of the standard deviation, using the…

A: Given information- Range = 64 We have to find the approximate value of the standard deviation using…

Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

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

A:

Q: Suppose the exam average in a class is 55% with a standard deviation of 4. What proportion of…

A: Given: Mean μ=55%Standard deviationσ=4% Consider, X be the random variable that follows the normal…

Q: You want to know the percentage of utility companies that earned revenue greater than 94 million…

A: Given Mean(μ)=60standard deviation(σ)=15

Q: In the Social Psychology course, you receive a score of 77 on the second exam. You are told that the…

A: Solution: Let X be the score. From the given information, X=77, σ=8 and z=–0.75.

Q: Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The…

A: The standard deviation of students lab measurements is 8. Juan repeats the measurement 2 times. That…

Q: standardized test has a pop. mean of 152 and a standard deviation of 16. Jenny has a score of 143.…

A: Given that Mean=M=152, Standard Deviation=Sd=16, Jenny score=X=143

Q: The annual rainfall in a town has a mean of 54.57 inches and a standard deviation of 12.84 inches.…

A: Given problem Given that   The annual rainfall in a town has a mean of 54.57 inches and a standard…