The table contains pulse rates collected from males, who are non-smokers but do drink alcohol. The beforepulse rate is before they exercised, and the after pulse rate was taken after the subject ran in place forone minute. Compute a 90% confidence interval for the mean difference in pulse rates from before andafter exercise. Round to two decimal places.Pulse Rate of Males Before and After ExercisePulsebefore49895151737574655066538958875249856860Pulseafter9414181911571251067966156891301011341307211212397% confidence, it can be said that the mean difference in pulse rates from% andWithbefore and after exercise is between%.

From the provided information, Sample size (n) = 19 Confidence level = 90% The difference table…

Answered: The table contains pulse rates…

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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Answer A B C
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
The heart rates for a group of 17 students taking a final exam are given below. Assume heart rates are normally distributed. Use a TI-83, TI-83 plus, or TI-84 calculator to find the 95% confidence interval for the true population mean. Round your answers to two decimal places and use increasing order. Beats per minute 92 101 93 89 93 89 92 95 86 93 96 93 96 87 94 97 101
If n=17, (x-bar)=48, and s=2, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.
Determine the critical values for the confidence interval for the population variance from the given values. Round your answers to three decimal places. n=6n=6 and c=0.9c=0.9.
Construct the 99.5% confidence interval for the difference p, - p, when x, = 50, n, = 75, x, = 65, and n, = 151. Round the answers to three decimal places. A 99,5% confidence interval for the difference between the two proportions is
An Internet retailer would like to investigate the relationship between the amount of time in minutes a purchaser spends on its Web site and the amount of money he or she spends on an order. The table to the right shows the data from a random sample of 12 customers. Construct a 99% confidence interval for the regression slope. Construct a 99% confidence interval for the slope. LCL = and UCL = (Round to three decimal places as needed.) C Time 20 12 28 22 1 13 Order Size $71 $23 $93 $198 $54 $35 Time 5 37 8 37 25 8 Order Size $57 $360 $122 $161 $72 $248
A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their school
A certified mechanic was timed for the repair of an automobile on 14 separate occasions.Over the same period a trainee mechanic was timed for the repair of a similar automobile.The times in minutes are given belowCertified 344 276 257 334 267 164 222 343 212 175 211 311 209 188Trainee 222 342 178 234 398 232 377 211 309 190 351 343 177 269 a. Calculate a 99% confidence interval for the mean time taken to repair the automobileby the (i) certified mechanic and (ii) the trainee mechanic. b. Test the hypothesis that the two mean times for both mechanics are equal. Use the 5%level of significance. Subsequently, it was learnt that the times for the trainee were incorrecly recorded andthat each of the values above is 30 minutes too small. What, if any, difference doesthis make to the results of the test done in part (b)?
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Use the histogram below to build a 95% confidence interval of the average heart rate of a person. Put your two numbers below in the spaces provided. Round to one decimal: ex: 98.2 The histogram visualizes the results of doing one thousand studies just like above. We are 95% confident that the average heart rate of a person is between ____and_____ All information needed to answer this problem is present. There is no missing information to this question.
Construct a confidence interval for p, - p2 at the given level of confidence. X1 = 35, n, = 254, x2 = 31, n2 = 300, 90% confidence %3D ... The researchers are % confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)

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