Adult Great Basin rattlesnakes have a mean length of 31 inches and a standard deviation of 4.7 inches; the length of adult Southern Pacificrattlesnakes is also 31 inches on average, but with a standard deviation of 7.05 inches. Both species have lengths that follow a normal distribution.You select a random sample of 36 Great Basin rattlesnakes and 100 Southern Pacific rattlesnakes.Which is more likely be shorter than 28.65 inches?O a. The sample mean length of the Southern Pacific rattlesnakesOb. Not enough information is provided; it depends.O c. Both sample means are equally likely to be more than 33.35 inches longO d. The sample mean length of the Great Basin rattlesnakes

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Answered: Adult Great Basin rattlesnakes have a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A particular fruit's weights are normally distributed, with a mean of 767 grams and a standard deviation of 39 grams.The heaviest 11% of fruits weigh more than how many grams?Give your answer to the nearest gram.
For a random sample of 55 overweight men, the mean of the number of pounds that they were overweight was 32. The standard deviation of the population is 4.1 pounds. The best point estimate of the mean is _____ pounds.
The average McDonald's restaurant generates $2.2 million in sales each year with a standard deviation of 0.9. Malik wants to know if the average sales generated by McDonald's restaurants in New Jersey is different than the worldwide average. He surveys 32 restaurants in New Jersey and finds the following data (in millions of dollars): 1, 1.2, 2.1, 2.8, 2.7, 1.5, 1.7, 3.5, 1.4, 3.6, 2.3, 2.8, 1.8, 2.1, 1.4, 2.1, 2.8, 2.1, 2.1, 2, 4.1, 3.1, 2.2, 3.7, 2.1, 2.4, 2.8, 1.1, 1.7, 2.2, 1.6, 3.4 Perform a hypothesis test using a 8% level of significance. Step 1: State the null and alternative hypotheses. Ho:?v|?く H。:?v||?く (So we will be performing a Select an answer v test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer with distribution mean and distribution standard deviation Step 3: Find the p-value of the point…
If the weekly grocery expenditure of households in a certain urban market is known to be normally distributed with a mean of $150 and a standard deviation of $30, what proportion of the households spend between $110 and $160 per week on groceries?
A particular fruit's weights are normally distributed, with a mean of 384 grams and a standard deviation of 22 grams.The heaviest 18% of fruits weigh more than how many grams?Give your answer to the nearest gram.
The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?
You may need to use the appropriate appendix table or technology to answer this question. The following results come from two independent random samples taken of two populations. Sample 1 n₁ = 60 X₁ = 13.6 01 = 2.4 (a) What is the point estimate of the difference between the two population means? (Use X₁ - X₂.) Sample 2 7₂ = 35 x2 = 11.6 (b) 02 = 3 Provide a 90% confidence interval for the difference between the two population means. (Use x₁ - x2. Round your answers to two decimal places.) to (c) Provide a 95% confidence interval for the difference between the two population means. (Use x₁ − ×₂. Round your answers to two decimal places.) to
A particular fruit's weights are normally distributed, with a mean of 464 grams and a standard deviation of 21 grams.The heaviest 11% of fruits weigh more than how many grams?Give your answer to the nearest gram.
A college administrator wants to see if students in different majors tend to have differing amounts of study time. The administrator collects the following data from 15 students in Sociology, 10 students in Engineering, and 12 students in History. The Sociology majors report an average of 10 hours studies per week and a standard deviation of 3 hours. The Engineering students report an average of 15 hours per week with a standard deviation of 7 hours. The History majors report an average of 12 hours studied and a standard deviation of 4 hours. The data can be summarized as follows: Major n Mean Study Hours Standard deviation Sociology 15 10 hours 3 hours Engineering 10 15 hours 7 hours History 12 12 hours 4 hours Does this data provide evidence for the notion that students in different majors study different amounts? Use α = .05
Adult Great Basin rattlesnakes have a mean length of 32.5 inches and a standard deviation of 6.6 inches; the length of adult Southern Pacific rattlesnakes is also 32.5 inches on average, but with a standard deviation of 9.9 inches. Both species have lengths that follow a normal distribution. You randomly select one Great Basin rattlesnake and one Southern Pacific rattlesnake. Which is more likely be longer than 35.8 inches? a. The Southern Pacific rattlesnake. b. Not enough information is provided, it depends. O c. Both are equally likely to be more than 35.8 inches long d. The Great Basin rattlesnake.
A particular fruit's weights are normally distributed, with a mean of 527 grams and a standard deviation of 17 grams. The heaviest 9% of fruits weigh more than how many grams? Give your answer to the nearest gram.
A recent Gallup poll interviewed a random sample of 1523 adults. Of these 868 bought a lottery ticket in the past year. If Gallup took many SRSs or 1523 people, the sample proportion who bought a ticket would vary from sample to sample. The sampling distribution would be close to a normal with a mean of 0.6 and a stamdard deviation of___ A. 0.4899 B.0.0251 C.0.00016 D. 0.0126

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