How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in thistemperature range is given below. Assume that the population of x values has an approximately normal distribution.50707595110403023100110105951056011012095906070In USE SALT(a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal places.)x = $S = $(b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price u of all summer sleeping bags. (Round youranswers to two decimal places.)lower limit24upper limit

Given data, 50,70,75,95,110,40,30,23,100,110,105,95,105,60,110,120,95,90,60,70 Here the Mean and…

Answered: How much does a sleeping bag cost?…

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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Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 51.4miles per hour. Speed (miles per hour) 42−45 46−49 50−53 54−57 58−61 Frequency 24 12 6 4 1 The mean of the frequency distribution is enter your response here miles per hour. (Round to the nearest tenth as needed.)
z Final Examination Mather X Question 11 Find the median of 65 70 65 OD 67 O A 64 O C 62 OB 65
n The gas mileages (in miles per gallon) for 26 cars are shown in the frequency distribution. Approximate the mean of the frequency distribution. Gas Mileage (in miles per gallon) Frequency 8 29-32 33-36 13 37-40 1 41-44 4 ... The approximate mean of the frequency distribution is (Round to one decimal place as needed.)
The frequency distribution below represents frequencies of actual low temperatures recorded during the course of a 31-day month. Use the frequency distribution to construct a histogram. Do the data appear to have a distribution that is approximately normal? Class A 39-44 B 45-50 C 51-56 D 57-62 E 63-68 F 69-74 G 75-80 Frequency 1 MONOIN 3 6 12 6 1 2 CH Choose the correct histogram below. A. 10- ABCDEFG 10- ABCDEFG B. 10- 10- 0₁ OF CO ABCDEFG h ABCDEFG Do the data appear to have a distribution that is approximately normal? A. No, it is not at all symmetric. B. No, it is completely erratic. C. Yes, it is approximately normal. D. No, it is approximately uniform.
Fill in the Blanks: Applying Chebyshev's Rule to this distribution, we estimate that 75% or more of women with metastatic breast cancer will survive between __________ and __________ years (2 standard deviations from the mean).
The ages of a random sample of motorcyclists when they were fatally injured in traffic crashes were recorded and tabled below: Age (in years) Below 16 1628 28 - < 40 40 - < 52 52 - < 64 64 - <76 B. 0.55 C. 0.44 Frequency 0 2 6 10 13 5 D. 0.50 Midpoints The relative frequency of motorcyclist's aged between 20 and 50 who were fatally injured in traffic crashes is (rounded off to two decimals): A. 0.38 22 34 46 58 70 Cumulative freq. 0 2 8 18 31 36
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Recall the histogram of annual maximum wind speed. Frequency оооооо 25 to 30 30 to <35 35 to 40 A histogram with a single peak is unimodal. A histogram with two peaks is bimodal. A histogram with more than two peaks is multimodal. Look over the histogram again and notice the number of peaks, or modes, in the distribution. Indicate below the class interval(s) where a peak occurs. (Select all that apply.) 40 to 45 45 to < 50 50 to < 55 55 to < 60 14 12 10 60 to < 65 co 4 25 30 35 40 45 50 55 60 65 annual maximum wind speed
The numbers of courses taught per semester by a random sample of university professors are shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Make a frequency distribution for the data. X 1 3 f Number of professors 25- 20- 15- 10- 4 20 23 15 1 2 3 4 Number of courses taught per semester
The frequency distribution below represents frequencies of actual low temperatures recorded during the course of a 31-day month. Use the frequency distribution to construct a histogram. Do the data appear to have a distribution that is approximately normal? Class Frequency A 39-44 1 B 45-50 1 AT C 51-56 5 D 57-62 13 E 63-68 8 F 69-74 1 G 75-80 2 Choose the correct histogram below. OA. ABCDEFG O C. 10- ABCDEFG B. Yes, it is approximately normal. C. No, it is not at all symmetric. OD. No, it is completely erratic. B. 10- 0- d. ABCDEFG O D. 10- 0 J ABCDEFG Do the data appear to have a distribution that is approximately normal? OA. No, it is approximately uniform.

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