Solve the problem. 21) Person A makes 10,000 dollars a month in a company, for which the mean is 8,500 and the standard deviation is 260. Person B makes 9,000 dollars a month, for which the mean is 7,600 and the standard deviation is 230. Which person has the better pay? A) A, score of2.17 B) B score of 6.09 C) B score of2.17 D)A score of 6.09

Q: An environmental biologist recorded the 20 24 22 20 numbers of snail eggs in the first clutch…

A: If we look at both the graphs provided (at 220 C and 250 C ) , the curves are skewed but the data is…

Q: The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

A:

Q: The quality control department of Cool Cola tested the bottle fillers and found them to fill 500 mL…

A: Measure of central tendency measures the central or average value of a dataset. Mean, median and…

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 242 cm.…

A: Thus, the standard z-score for the tallest man is 10.51.

Q: 3. In regard to the standard deviation you calculated on #2, what is one conclusion you can make…

A: You have asked only question 3. So, the answer is given for question 3 below in the next step.

Q: A manufacturer claims that a new snowmaking machine can save money for ski resort owners.  He states…

A:

Q: A test is normally distributed with a mean of 70 and a standard deviation of 8. (a) What score would…

A: a What score would be needed to be in the 58th percentile. Therefore, the score at 85th percentile…

Q: 7. If you made only n = 1 measurement of rack height, the standard deviation of the measurement…

A: Solution: 7. From the given information, n = 1.

Q: After examining a child at his​ 2-year checkup, the​ boy's pediatrician said that the​ z-score for…

A: The z score is given by Z = 1.31

Q: In a Science test, the mean score is 42 and the standard deviation is 5. Assuming the scores are…

A: As per bartleby guidelines only 3 subparts are answered please upload the rest separately. The mean…

Q: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size is…

A:

Q: A grocery supplier believes that in a dozen eggs, the mean number of broken eggs is 0.5 with a…

A: Given : For a dozen of eggs :  E(X) = 0.5 SD(X) = 0.4

Q: A scientist has read that the mean birth weight, , of babies born at full term is 7.5 pounds. The…

A: a) Null and Alternate Hypothesis: H0: μ=7.5H1: μ>7.5 Therefore, H0: μ is equal to 7.5 H1: μ is…

Q: In an English test, the mean is 60 and the standard deviation is 6. Assuming the scores are normally…

A:

Q: A successful basketball player has a height of 6 feet 4​inches, or 193cm. Based on statistics from a…

A: The z-score identify that the value how many standard deviations from the mean. If the z-score is…

Q: A standardized measure of achievement motivation is normally distributed, with a mean of 35 and a…

A: Given data, μ=35σ=14P(X>x)=2.5%=0.025x=?

Q: "The weights of 1,000 children, in average, is 64kg with standard deviation of 18kg. Suppose the…

A: Given that n=1000, mu =64 ,s.d =18 ,p(x<59 ) =?

Q: A set of final examination grades in an introductory statistics course is normally dis-tributed with…

A: Given that  Mean=mu=79 Standard deviation=sigma=12 X~Normal (mu=79,sigma=12) Note: According to…

Q: In the accompanying display (where both curves are placed on the same number line), which has the…

A: The display shows the normal curves for A and B in same number line.

Q: A scientist has read that the mean birth weight, μ, of babies born at full term is 7.3 pounds. The…

A: Given that a scientist has read that the mean birth weight, μ, of babies born at full term is 7.3…

Q: A business owner usually requests freelancers to work with, where he pays his freelancers an average…

A: From the given information, the mean is 15.90 and standard deviation 1.50.

Q: (c) If the standard deviation remains at 0.5 ounce, what must the mean weight be for the company to…

A: Givenstandard deviation(σ)=0.5x=13 ounces

Q: A pharmacologist measured the concentration of dopamine in the brains of several rats.The mean…

A: Mean = 1269 Standard deviation = 145

Q: In one town, the number of pounds of leafy greens consumed per person per year has a mean of 10…

A: (1) Standardized z-score:   The standardized z-score represents the number of standard deviations…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 225…

A: Given that  The tallest living man at one time had a height of 225 cm. The shortest living man at…

Q: For a random sample of 10 men, the mean head circumference is x-bar= 57.3 cm and the sample standard…

A:

Q: Find the proportion of their long distance calls that is between 4.0  minutes and 5.5 minutes?

A: Let X be a random variable which denotes lengths of the long distance calls.…

Q: d. Compute the first and third quartiles. e. Which measure, the mean or median, is a better measure…

A: The data can be sorted in ascending order as: 28, 29, 30,39, 41, 48, 48, 49, 51, 62

Q: 4. The average waist size for teenage males is 29 inches with the standard deviation of 2 inches.…

A:

Q: 2. The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

A: X~N( μ , ?^2 )    μ =69     , ? = 2.5   Z-score =( x - μ )/?

Q: Assume that the SAT test scores are normally distributed with a mean score of 1200 and a…

A:

Q: A distribution of numbers is approximately bell shaped. If the mean of the numbers is 129 and the…

A: a. The two numbers that would fall approximately between 68% of the given values are, Thus, the two…

Q: It is given that a vending machine dispenses a mean of 7.6 ounces with a standard deviation of 0.4…

A: Given: Mean = 7.6  Standard deviation =  0.4 oz

Q: he scores on a standardized mathematics test for 8th grade children in New York State for a normal…

A: mean = 70 standard deviation = 10 a. What proportion of the students in the state have scores less…

Q: 1. A biologist claims that the mean cholesterol content of chicken eggs can be reduced by giving a…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 280280 Sample Standard Deviation (s)(s) =…

Q: Do men take less time than women to get out of bed in the morning? The 42 men observed averaged 7.6…

A: Given : Men  Sample size = nm = 42 Mean = xm = 7.6 Standard deviation = sm = 2.2 Women  Sample size…

Q: The mean IQ of 200,000 current and past University of Manitoba students has been found to be 81.9.…

A: Given: Population mean μ=81.9 Population standard deviation σ=13.1 Number of people in 2016 = 29987…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full-…

A:

Q: suppose the average time to fill a routine prescription at a local pharmacy is 35 minutes based on…

A: Given data,Mean μ=35sd    σ=11x=48z=?

Q: Suppose you have already calculated the mean, the average deviation, and the standard deviation of…

A: (a) Condition for Average Deviation: If the value of the observation is increased or decreased by a…

Q: stributed with a mean of 100 and a standard deviation of 16. Find the proportion of people in the…

A:

Q: A group of five friends are long-distance runners who will be running in an upcoming marathon. To…

A: Given the data of number of miles run per week of 5 runners as shown below The runners with low…

Q: On a measure of​ anxiety, the mean is 83 and the standard deviation is 12. What are the Z scores for…

A: Given: Mean (M) = 83 Stndard deviation (SD) = 12 Formula:

Q: B. Solve each problem and construct a normal curve. 1. Your monthly electric bill has a mean of…

A:

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A:

Q: About what percent of x values lie between the first and second standard deviations from the mean…

A:

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 245…

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: Sixteen percent of the world's population is left-handed. A researcher claims that left-handed…

A: a) mean (p) = 0.16 , q = 1 - 0.16 = 0.84 , n =2100