The technical team of a university would like to perform an analysis on pre-recorded lecturevideos. Let X be the video length in minutes. The value of X is collected for a random sampleof 85 videos, and the results obtained are summarized in the table below. The correspondingprobabilities computed using = 50 and s = 15 are also given in the table.Length (min), x< 3535 – 45 | 45 – 5555 – 65> 65Observed frequencies, O18301813Probabilities0.15870.21080.26100.21080.1587Perform a x goodness-of-fit analysis with a significance level of 0.05 to test the hypothesisthat these data follow a normal distribution. Use 4 decimal places for the intermediate steps.

It is needed to check whether the data follows normal distribution.

Answered: The technical team of a university…

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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A government sample survey plans to measure the total cholesterol level of an SRS of men aged 20-34. suppose that, in fact, the total cholesterol level of men aged 20-34 follows the normal distribution with a mean of 182 milligrams per deciliter. The standard deviation is 37 milligrams per deciliter. choose an SRS of 1000 men from this population. Now what is the probability that x falls within + or - 2 milligrams per deciliter of the mean?
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Three items are drawn in randomly from a population of 7 items. The item drawn may be defective or non-defective.Random variable is the occurrence of non-defective items. Total defective items in the population are two. Make a frequency distribution table of the random variable. Find the expected value of non-defective items in the random experiment.
Three items are drawn in randomly from a population of 7 items. The item drawn may be defective or non-defective. Random variable is the occurrence of non-defective items. Total defective items in the population are two.a. Make a frequency distribution table of the random variable. b. Find the expected value of non-defective items in the random experiment.
The table below provides another look at the data presented in item 1. This table includes a third variable, stone size, making a three-way table (i.e. two 2 X 2 tables). ô อิ = 1 Stones size Small = kidney stones. Find and 1 2 Large 1 Outcome Success Failure Success Failure Let represent the odds ratio for the 2 X 2 table for small kidney stones, and let represent the odds ratio for the 2 X 2 table for large Round your answers to 2 places after the decimal. Treatment A 81 6 2 192 71 Treatment B 234 36 55 25 2
For each probability and percentile problem, draw the picture.A random number generator picks a number from 1 to 8 in a uniform manner. Part (e) ? = rounded to two decimal places) Part (f) P(3.5 < X < 7.25) = (Enter an exact number as an integer, fraction, or decimal.) Part (g) P(X > 3.67) = (rounded to two decimal places)
The NJ Department of Health has reported the average life span of NJ residents is 81 years. If the standard deviation is σ = 4 years, what is the probability of a person living to at least 92 years of age?
The accompanying data are from an article. Each of 309 people who purchased a Honda Civic was classified according to gender and whether the car purchased had a hybrid engine or not. Male Female Hybrid 76 33 Not Hybrid 116 84 Suppose one of these 309 individuals is to be selected at random. Determine if the probabilities P(hybrid male) and P(male hybrid) are equal. If not, explain the difference between these two probabilities. O Yes, the probabilities are equal. No, the probabilities are not equal. The first is the probability that a hybrid Honda Civic owner is male, and the second is the probability that a male Honda Civic owner purchased a hybrid. O No, the probabilities are not equal. The first is the probability that a male Honda Civic owner purchased a hybrid, and the second is the probability that a hybrid Honda Civic owner is male.
Solve Q3 correctly and clear
Of all the students, 44% own an iPhone, with a standard deviation of .03 For that same sample of 400 students, what is the probability that at least 42% of them own an iPhone?
Example 24 : In eight throws of a die 5 or 6 is considered a success. Find the mean number of success and the standard deviation.

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