QUESTION 4A quality control technician is checking the weights (in grams) of a Nescafe Gold Blend Coffee. Shetakes a random sample of 6 units and weighs each unit. The observed weights are shown below:50.3 49.6 51.3 49.8 51.3 49.9 51.1Assume the population has a normal distribution.(a) Compute the meanand the standard deviationweight of a Nescafe Gold Blend Coffee. Round your answer to three decimal places.and the upper confidence limitof the 98% confidence interval for u, the mean weight. Round your answer(b) Calculate the lower confidence limit

Solution: Given information: n= 7 Sample size To find sample mean and standard deviation. x…

Answered: A quality control technician is…

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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In the 1992 presidential election, Alaska's 40 election districts averaged 1993 votes per district for President Clinton. The standard deviation was 584. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X ~ N( b. Is 1993 a population mean or a sample mean? Select an answer v C. Find the probability that a randomly selected district had fewer than 2053 votes for President Clinton. d. Find the probability that a randomly selected district had between 2074 and 2208 votes for President Clinton. e. Find the 95th percentile for votes for President Clinton. Round your answer to the nearest whole number.
Determine whether the normal distribution can be used to compare the following population proportions. n₁ = 33, n₂ = 46, 1 = 0.818,2 0.913 Step 1 of 2: Calculate the four values n₁₁, n₁ (1-1), n22, and n2 (1-2). Round your answers to three decimal places, if necessary.
one z-score unit is equivalent to ______ of the distribution. a. the variance b. the range c. the standard deviation d. the mean e. the correlation coefficient
Assume that the heights of women are normally distributed with a mean of 63 inches and a standard deviation of 1.4 inches. Find Qa, the third quartile that separates the bottom 75% from the top 25%. Click to view page 1 of the table. Click to view page 2 of the table. O A. 62.1 B. 63.9 O C. 64.6 O D. 64.8
Please see attached.
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 table shows the scores of 20 people who took a paramedics licensing test. Find the mean and standard deviation for these data. The mean of the data is The standard deviation is approximately Round to three decimal places as needed.) Score Frequency 7 1 3 6 2 1 (.... NKR888 74 75 79 86 98 0
A survey collected the data below. x 26 4 16 12 20 The mean is 15.6. Calculate the deviation of x=16 ?
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 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 P6, the 6th percentile. This is the bone density score separating the bottom 6% from the top 94%. Which graph represents Pg? Choose the correct graph below. OA. O B. OD. Q P8

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