The average number of words in a romance novel is 64,165and the standard deviation is 17,215. Assume the distributionis normal. Let X be the number of words in a randomlyselected romance novel. Round all answers to 4 decimalplaces where possible.a. What is the distribution of X? X - N(b. Find the proportion of all novels that are between 72,773and 89,988 words.c. The 70th percentile for novels is(Round to the nearest word)d. The middle 80% of romance novels have fromwords tonearest word)words.words. (Round to the On average, indoor cats live to 15 years old with a standarddeviation of 2.2 years. Suppose that the distribution isnormal. Let X = the age at death of a randomly selectedindoor cat. Round answers to 4 decimal places wherepossible.a. What is the distribution of X? X - NOb. Find the probability that an indoor cat dies when it isbetween 15.2 and 17.8 years old.c. The middle 20% of indoor cats' age of death lies betweenwhat two numbers?Low:High:yearsyears

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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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Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.05 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). E Click the icon to view the data. In this example, Hg is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the weight of discarded paper minus the weight of discarded plastic for a household. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: Ha = 0 H,: Ha #0 O B. Ho: Ha #0 H1: Hd =0 O C. Ho: Ha #0 O D. Ho: Ha = 0 H1: Hd 0
Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.10 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). Click the icon to view the data In this example, Hg is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the weight of discarded paper minus the weight of discarded plastic for a household. What are the null and alternative hypotheses for the hypothesis test? O A. H9: Ha =0 H1: Ha 0
The median for the set of sample measurement { -10,-8,-4,-2,0,6,11} a. -2 b. -1 c. 0 d. 6
During an experiment, the following times (in seconds) were recorded. Find the mean. 6.3, 5.4, 6, 3.2, 5.4, 5.5 ... The mean is (Round to one decimal place as needed.) ...
Find the z-score that has 70.54% of the distribution's area to its right. Click to view page 1 of the table. Click to view page 2 of the table. O A. - 0.82 В. - 0.54 С. 0.82 D. 0.54
In a normal curve, the percentage of the scores between one and two standard deviations above the mean is approximately __________. Select one: a. 14% b. 50% c. It is impossible to tell. d. 2% Clear my choice
For the data shown, answer the questions. Round to 2 decimal places. 4.9 2.3 3 19.7 19.8 Find the mean: Find the median: Find the sample standard deviation:
Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P7, the 7th percentile. This is the bone density score separating the bottom 7% from the top 93%. Which graph represents P7? Choose the correct graph below. A. P7 The bone density score corresponding to P7 is (Round to two decimal places as needed.) B. A P7 2 C. ^ P7 Ly D. A P7
Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and standard deviation of 1.00 degrees C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to Upper P 84, the 84 th percentile. This is the temperature reading separating the bottom 84 % from the top 16 %. A. Which graph represents Upper P 84? B. The temperature for Upper P 84 is approximately (Round to two decimal places as needed.)
1) Suppose you are a 20 year old student and you have convinced your parents to let you live off campus. Remarkably, they have agreed to pay for your housing. Suppose your parents claim that one-bedroom apartments cost an average of $600 per month. You disagree, and think one-bedroom apartments are more expensive than that. Suppose you went to the local paper and found 40 one-bedroom apartments listed. You calculate a sample mean of x = $600 with a standard deviation of ơ = $50. You and your parents have agreed on the a = .05level. a) State the null and alternative hypotheses. What is the critical value? Sketch a density curve and identify the b) critical region. oonaollingle to inot rovio (gaitea e bas OS- m olqme Stoaurgia.nb s ozA 20.0 c) Calculate the z value corresponding to the test statistic xand show its location on the sketch of part (b).
For the data shown, answer the questions. Round to 4 decimal places where possible. 3.8 3.7 12.5 26.7 21.1 2.8 19.9 7 Find the mean: 12.2125 Find the median: 9.85 Find the standard deviation: 9.3137
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)

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