The amount of growth, in a 15-day period, for a population of sunflower plants was found to follow a nor- mal distribution with mean 3.18 cm and standard devia- tion 0.53 cm.9 What percentage of plants grow (a) 4 cm or more? (b) 3 cm or less? (c) between 2.5 and 3.5 cm?

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A: Given, Class interval is 10 Minimum value =21 Maximum value = 77 Range = 83-21 =62 Number of class=…

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Q: If the proportion of H’s is .45 out of 200 flips, what is the p-value?

A:

Q: . The annual salaries of employees in a large company are approximateley normally distributed with a…

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Q: A researcher wanted to determine whether certain accidents were uniformly distributed over the days…

A: A researcher wanted to determine whether certain accidents were uniformly distributed over the days…

Q: Use the Normal model N (1168,50) for the weights of the steers.  A) what weight represents the…

A: Given,mean(μ)=1168standard deviation(σ)=50

Q: Assume college women have heights with the following distribution (inches): N(66, 2.3). Complete…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

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A:

Q: Convert the following to z-score: a. Raw score of 100; mean of 60; SD of 15 b. Raw score of 95; mean…

A: Z=x-µσ This is the formula for z-score. x= raw score µ= mean σ= standard deviation (SD)

Q: The welghts for newborn bables Is approxdmately nomally distributed with a mean of 6 pounds and a…

A: Given Data Population Mean,μ = 6.0 Population Standard Deviation,σ = 1.8 N = 1800

Q: 2) A bottler of drinking water fills plastic bottles with a mean volume of 1008 millilit (mL) and…

A: The mean is 1008 and the standard deviation is 7.

Q: The average amount of rainfall in Puerto Rico last month was 3.5 inches, according to the National…

A: Given information Mean µ = 3.5 inches Standard deviation σ = 0.8 inches

Q: e. Ninety-eight percent of the monthly intern pays are between what two values, symmetrically…

A:

Q: A variable is normally distributed with mean 20 and standard deviation 7. Use your graphing…

A: The given mean is 20 and standard deviation is 7.

Q: It is believed that the SD of the length of all cars is 2.6 ft. A researcher measures 33 cars and…

A: Given that SD = 2.6 , mean of 33 car is = 23.5 n = 33, n is the sample size

Q: Draw out a P chart using the following table.  The number of EVs are the defects.   Mean proportion…

A: Provided data:

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Q: The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013-2015.…

A: given data μ=20.9σ=5.3normal distribution

Q: For a one-tailed test, the p-value is given by: a) the area under the curve between the mean and the…

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Q: b) The amount of money earned in a day by Ms. Anne's craft shop was recorded and displayed in the…

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Q: Use the Normal model ​N(1163​,79​) for the weights of steers. ​a) What weight represents the 52nd​…

A: GivenNormal model N(1163,79)Mean(μ)=1163standard devaition(σ)=79

Q: The average life of a car tire is 50,000 miles. The standard deviation is 2,000 miles. а.) Draw and…

A: Since you have posted the question with multiple sub-parts, we will solve first three parts for you.…

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Q: IF babies Neighto are normally distributed with a mean ot 3.23ky and a standard deviantion of 0.87kg…

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Q: In using cusum chart with n=1, the process standard deviation should be estimated in a way similar…

A: Since we have to model standard deviation in cusum chart, we can use Xbar and S charts.

Q: Use the Normal model N(1102,85) for the weights of steers. a) What weight represents the 53rd…

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Q: The type of household for the U.S. population and for a random sample of 411 households from a…

A: Given data: Sample Size = 411 Here:  k=5 To find: A.The value of chi-square test statistic  B. P-…

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Q: Suppose that 100,000 recent grads have starting salaries which are normally distributed with a mean…

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A: From the given information we conduct t test for one mean.

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Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: Suppose students' exam scores are normally distributed with mean u = 65 and %3D standard deviation O…

A:

Q: The average annual rainfall in New York City follows a normal distribution with a mean of 49.9…

A: Mean()=49.9standard deviation()=9.5

Q: The duration (in minutes) for a sample of 20 flight-reservation telephone calls is shown in the…

A: We assume the population has a normal distribution.

Q: Consider a population of 800 values that are normally distributed with a mean of 80 and standard…

A: Given information Mean = 80 Standard deviation= 5 Z score = x - mu /s