Elementary school: In a certain elementary school, 49% of the students are girls. A sample of 65 students is drawn. Use theO Cumulative Normal Distribution Table or technology. Round your answer to four decimal places.Part: 0 / 2Part 1 of 2(a) What is the probability that more than 60% of them are girls?The probability that more than 60% of them are girls is 0.0384Part: 1/ 2Part 2 of 2(b) Would it be unusual for more than 70% of them to be girls?(Choose one) ▼it (Choose one) ▼ be unusual.OCT25WMacBook Air

Given : population proportion,p = 0.49 sample size n = 65

Answered: Elementary school: In a certain…

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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Macmillan Learning An extensive study in Antarctica concluded that the mean height of adult emperor penguins in the wild is 44.5 in. Cassandra believes that captive emperor penguins have a greater mean height due to better nutrition. To test this idea, she decides to conduct a one-sample t-test to see if the mean height of captive emperor penguins is greater than 44.5 in. She selects a simple random sample of 26 penguins from different zoos around the country and has each penguin measured. The summary statistics of the sample are given below. Sample size n = 26 Sample mean x = 45.6 in Sample standard deviation s = 4.3 in The heights of emperor penguins are normally distributed, and there are no outliers in the sample. Construct the null and alternative hypothesis for the appropriate one-sample t-test for the mean height of captive emperor penguins. Ho: H₁: =
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 8 randomly selected cities. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts (a) through (c) below. 68.42 78.57 68.76 84.62 79.17 87.73 101.93 98.62 O Click the icon to view the table of critical t-values. ... (a) Determine a point estimate for the population mean travel tax A point estimate for the population mean travel tax is $ 83.48 (Round to two decimal places as needed.) (b) Construct and interpret a 95% confidence interval for the mean tax paid for a three-day business trip. Select the correct choice below and fill in the answer boxes to complete your choice.. (Round to two decimal places as needed.) O A. One can be % confident that the mean travel tax for all cities is between $ and $. O B. One can be % confident that the all cities have a travel tax between $ and $. OC. The…
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 8 randomly selected cities. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts (a) through (c) below. 68.09 79.99 70.42 83.11 79.33 85.94 101.02 97.39 O E Click the icon to view the table of critical t-values. (a) Determine point estimate for the population mean travel tax. A point estimate for the population mean travel tax is $ 83.16 (Round to two decimal places as needed.) (b) Construct and interpret a 95% confidence interval for the mean tax paid for a three-day business trip. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. One can be % confident that the mean travel tax for all cities is between $ and $. O B. There is a % probability that the mean travel tax for all cities is between $ and $. O C.…
Could you help in the process please
云2 * 00 The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents. Pedestrian Intoxicated? Driver Intoxicated? Yes NO. 74 Yes 283 577 NO. If one of the pedestrian deaths is randomly selected, find the probability that the driver was not intoxicated. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob = | Submit Question MacBook Air 0吕 F3 DD F4 F5 F2 & 23 $ 4. 7. 2. M R. H
Refe of gir The The Table of numbers of girls and probabilities Number of Girls x 0 1 2 5678 A WN- 3 4 Print P(x) 0.006 0.035 0.116 0.216 0.263 0.223 0.103 0.035 0.003 Done hts. The ranc
Statistics students believe that the mean score on the first statistics test is 65. A statistics instructor thinks the mean score is higher than 65. He samples ten statistics students and obtains the scores 65; 65; 70; 67; 66; 63; 63; 68; 72; 71. He performs a hypothesis test using a 5% level of significance. The data are assumed to be from a normal distribution.
Determine whether the given procedure results in a binomial distribution. Tossing a coin 12 times and recording the number of outcomes that are heads.
In a scholastic aptitude test, mean score for the three parts are:Critical reading 410Mathematics 425Writing 480Assume that the population variance on each part of the test is 6400. What is the probability a sample of 100 test takers will provide a sample mean test score within 10 points of the population mean of Critical Reading part of the test?
Biology A biologist found the wingspans of a group of monary butterflies to be normally distributed with a mean of 52.2 mm and a standard deviation of 2.3 mm. What percent of the butterflies had a wingspan between 50 and 55 mm?
How do we determine the type of probability distribution to use for a given set of data?

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