4. In a test designed to assess small motor coordination, kindergarten pupils are timed on their performance of a specific task. Itis known that the time required to complete the task has an approximate bell-shaped distribution with mean 36 seconds anda standard deviation (s.d.) of 6 seconds.How long should the test administrator allow for the performance of the task, if it is desired that approximately 97.5% of thekindergarten pupils complete the task?48422430

4) Given that, Consider that approximately 97.5% of the kindergarten pupils complete the task The…

Answered: 4. In a test designed to assess small…

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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After the pandemic hit and people were forced to spend more time indoors, there have been a suspicion among health professionals. that people are eating more and thus gaining weight. In 2018, the average weight of 192 pounds, and health experts want to know if that average weight of the American male has gone up during this pandemic. d. A sample of 50 American males yeilded a sample average weight of 195 pounds and a sample standard deviation of 14.5 pounds. What is your conclusion at the 5% level of significance? (be sure to state your conclusion in the context of this problem) e. Would your conclusion change if the level of significance were changed to 1%? Briefly explain.
Consider the data from the Anthropology 105 class. The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?
This Quiz: 13 pts possibl Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 63 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 54 miles per hour and 72 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 54 miles per hour and 72 miles per hour. (1,1) More Enter your answer in the answer box.
Consider a set of data in which the sample mean is 27 and the sample standard deviation is 6.2. Calculate the z-score given that x = 28.5. Round your answer to two decimal places. An
Assume that the test scores for biostatistics midterm examination are normally distributed with a mean of 74 and a standard deviation of 10. i. Suppose that you receive a score of 88. What percent of the class received scores higher than yours? ii. Suppose that the teacher wants to limit the number of A grades in the class to no more than 20%. What would be the lowest score for an A?
The president of a college wants to determine the mean number of units that college students take per semester. How large of a sample is required in order to be 99% sure that a sample mean will be off by no more than 1.25 units? An initial study suggested that the standard deviation is approximately 2.1 units.
The mean cholesterol level for females in a population is 200 with a standard deviation of 25. Samples of size 64 are drawn from the population. A. What is the mean of the sample means? B. What is the standard error of the sample means?
Show all steps/ calculator commands using a TI84 graphing calculator. 2. The scores of a psychology test are normally distributed, has a mean of 72.9 points and a standard deviation of 10.3 points. Below what score is the bottom 20% of the class? Round to whole numbers What score is at the 85th percentile? Round to whole numbers
5.
I only need help with parts c and d. Thank you!!!
Q) The RATES of a SWEET BOX follows a normal distribution with a mean of $2.20 and a standard deviation of $0.20. Find the RATE for which 10.23% of sweet boxes are exceeded. Round your answer to nearest cent (hundredth) if necessary.

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