Suppose you have purchased a filling machine for candy bags that is supposed to fill each bag with 16 oz of candy. Assume that the weights of filled bags are approximately normally distributed. A random sample of 10 bags yields the following data (in oz): 15.87 16.02 15.78 15.83 15.69 15.81 16.04 15.81 15.92 16.10 On the basis of these data, can you conclude that the mean fill weight is actually less than 16 oz? State the appropriate null and alternate hypotheses.

Suppose you have purchased a filling machine for candy bags that is supposed to fill each bag with 16 oz of candy. Assume that the weights of filled bags are approximately normally distributed. A random sample of 10 bags yields the following data (in oz): 15.87 16.02 15.78 15.83 15.69 15.81 16.04 15.81 15.92 16.10 On the basis of these data, can you conclude that the mean fill weight is actually less than 16 oz? State the appropriate null and alternate hypotheses.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter18: Mathematics In Engineering

Section: Chapter Questions

Problem 32P

See similar textbooks

Similar questions

Imagine that you and four of your classmates have measured the density of air and recorded the values shown in the accompanying table. Determine the average, variance, and standard deviation for the measured density of air. Density of Air (kg/m3) 1.27 1.21 1.28 1.25 1.24
8.4 Consider a population consisting of the following five values, which represent the number of DVD rentals during the academic year for each of five housemates: 8 14 16 10 11 a. Compute the mean of this population. b. Select a random sample of size 2 by writing the five numbers in this population on slips of paper, mixing them, and then selecting two. Compute the mean for your sample. c. Repeatedly select random samples of size 2, and compute the x value for each sample until you have the x values for 25 samples. d. Construct a density histogram using the 25 x values. Are most of the x values near the population mean? Do the x values differ a lot from sample to sample, or do they tend to be similar? (Hint: See Example 8.1.)
The National Institute of Diabetes and Digestive and Kidney Diseases reports that the average cost of bariatric (weight loss) surgery is about $22,500. You think this information is incorrect. You randomly select 30 bariatric surgery patients and find that the average cost for their surgeries is $21,545 with a standard deviation of $3015. Is there enough evidence to support your claim at Use a P-value. area of the result of z = 0.0418 1. determine the value of z 2. determine the value of P 3. decision
The mean average of the numbers a, b, 8, 5, and 10 is 6, and the variance is 6.80. What set of the given numbers a and b that agree to the given mean average value and the variance of the population? i: a=0, b=7 ii: a=5, b=2, iii. a=1, b=6, iv. a=3, b=4 Subject: Applied Statistics
For Problem 19.39 , determine the probability (assuming normal distribution) that a tire could be used reliably for more than 50,000 kilometers.
For Problem 19.39 , determine the probability (assuming normal distribution) that a tire could be used reliably for less than 45,000 kilometers.
Flood discharges (m3/s) observed in a stream for 50 years are given below arranged in an increasing order. a. Plot the histogram, frequency histogram and cumulative frequency histogram by classifying the data into appropriate intervals. b. Find the mean, mode and media. Discuss whether the distribution is normal or not? c. Calculate the Csx and Kx. Discuss the shape of distribution 125 137 147 154 162 148 155 165 125 138 127 141 148 156 165 133 141 133 142 149 157 166 149 157 169 150 158 171 133 143 134 145 152 158 174 137 145 152 160 181 137 145 153 161 182 137 147 154 161 189
Let 4 items be chosen at random from a lot containing 12 items of which 5 are defective. Determine the probability that at most 3 items are defective. 92/99 98/99 86/91 5/91
10. An agricultural engineer measured a distance of points A and B and the following values were recorded in a series measurement. Determine the probable error of the mean and single measurement. 251.22, 251.26, 251.12, 250.99 , 250.98, 251.00
For Problem 19.1, using Equations (19.1) and (19.6), calculate the mean and standard deviation of the class scores.