B. Solve the following problems.1. The mean of the students in Grade 1 section Newton is 125 cm and the standard deviation is 3.5cm. Assuming the heights are normally distributed, what percent of the height is:a. Greater than 135 cm?b.Less than 128 cm?C. Between 128 cm and 135cm2. Consider the normal distribution of IQs with a mean of 100 and a standard deviation of 16. Whatpercentage of IQs are:a. Greater than 95?b.Less than 120?

Answered: Image /qna-images/answer/8892dea7-1018-43af-bef8-4bbef0db8e0a.jpg

Answered: B. Solve the following problems. 1. The…

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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For a given frequency distribution data table, x= 6, Exf =1200 and Ef = 25 then the sample standard deviation equals: Select one: a. 11.5 b. 2.65 с. 3.54 d. 10.5
Task 9: Answer the following: The weight, in kilograms, of cereal in a box can be modelled by a normal distribution with Mean u and standard deviation 5.4 kg .Given that 10% of boxes contains less than 17 kg. Find. a. The value of p. b.The percentage of boxes that contain more than (17 +4) kg. c.If the machine settings are adjusted so that the weight of cereal in a box is normally distributed with mean (17 + 3)kg and standard deviation of o. Given that the probability of boxes contains between 17 kg and (17 + 6) kg is 0.9671, find the value of o.
What is the population standard deviation using the following formula
Do question 3
The mean annual income for adult women in one city is $28,520 and the standard deviation of the incomes is $5,400. The distribution of incomes is skewed to the right. For samples of size 111 determine whether the distribution of x is normal or approximately normal and give its mean and standard deviation. O A. Normal, mean p; = $28,520, standard deviation o; = $5,400 O B. Approximately normal, mean p: = $28,520, standard deviation o: = $513 OC. Approximately normal, mean p- = $28,520, standard deviation o = $5,400 O D. Normal, mean p- = $28,520, standard deviation o- = 513
7.
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer.The artifact frequency for an excavation of a kiva in Bandelier National Monument gave the following information. Stratum Flaked Stone Tools Nonflaked Stone Tools 1 10 2 2 10 3 3 9 2 4 1 3 5 4 7 6 38 32 7 51 30 8 25 12 What is the value of the sample test statistic? (Round your answer to three decimal places.)
3. In a normal frequency distribution of serum sodium concentrations, the mean is 141 mEq/L and the standard deviation is 3.2 mEq/L. Which of the following most closely represents the percentage of values in the interval between 137.8 mEq/L and 144.2 mEq/L? OA) 25% B) 50% C) 65% OD) 95% OE) 99% 456
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer.In the following data pairs, A represents birth rate and B represents death rate per 1000 resident population. The data are paired by counties in the Midwest. A random sample of 16 counties gave the following information. A: 12.5 13.2 12.6 12.1 11.4 11.1 14.2 15.1 B: 9.6 14.3 10.7 14.2 13.2 12.9 10.9 10.0 A: 12.5 12.3 13.1 15.8 10.3 12.7 11.1 15.7 B: 14.1 13.6 9.1 10.2 17.9 11.8 7.0 9.2

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