A company claims that each batch of its deluxe mixed nuts contains 52% cashews, 27% almonds, 13% macadamia nuts, and 8%Brazil nuts. To test this claim, a quality-control inspector takes a random sample of 150 nuts from the latest batch. The tabledisplays the sample data.Type of nut Cashew Almond Macadamia BrazilCount8329201819.5,The inspector has also calculated the expected counts for each type of nut: Cashew = 78, Almond = 40.5, Macadamia =Brazil = 12.The Random condition is met. Can the inspector use a chi-square distribution to calculate the P-value?Because at least one expected count is greater than 30, the inspector can use a chi-square distribution.Because all expected counts are not greater than 30, the inspector cannot use a chi-square distribution.Because all observed counts are greater than 5, the inspector can use a chi-square distribution.Because the distribution of counts is approximately normal, the inspector can use a chi-square distribution.Because all expected counts are greater than 5, the inspector can use a chi-square distribution.

The given expected counts are: Type of nut Cashew Almond Macadamia Brazil Expected count 78…

Answered: A company claims that each batch of its…

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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Cloud seeding has been studied for many decades as a weather modification procedure. The rainfall in acre-feet from 20 clouds that were selected at random and seeded with silver nitrate follows: 18.0, 30.7, 19.8, 27.1, 22.3, 18.8, 31.8, 23.4, 21.2, 27.9, 31.9, 27.1, 25.0, 24.7, 26.9, 21.8, 29.2, 34.8, 26.7, and 31.6. There is a claim that mean rainfall from seeded clouds exceeds 25 acre-feet. The P-value for the test H0: µ = 25 versus H1: µ > 25 is closest to:
From this population data set: (3, 6, 9, 12, 18), how many possible samples with sample size of 3 can be chosen? O a. 3 O b. 5 O c. 10 Od. 15
5
A random sample of 10 compact cars, 10 mid-size cars, and 10 luxury cars were selected. The time (in seconds) each of the randomly selected cars required to accelerate from 0 to 60 mph was looked up on the Autos.com website. The results are presented below. Car Type Time (in seconds) Required to Accelerate from 0 to 60 mph Compact 9.3 8.1 10.2 8.8 9.0 9.3 7.7 9.2 9.4 8.6 Mid-Size 6.9 5.7 8.3 7.7 8.6 5.9 6.1 8.8 6.1 7.2 Luxury 5.7 6.3 5.4 4.7 6.2 7.0 5.9 5.3 6.3 5.0 Conduct a hypothesis test using ! = 0.05 to determine whether the mean time required to accelerate from 0 to 60 mph is the same for compact, mid-size, and luxury cars. (No accounting or excel, I need help solving it.)
USE EXCEL to solve this problem. Thanks.
Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 90 Sophomores 60 Juniors 90 Seniors 60 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals a. 0.5444 b. 2.789 c. 10.989 d. 15.231
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 400 students taken from this year's student body showed the following number of students in each classification. Freshmen 113 Sophomores 98 Juniors 115 Seniors 74 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals Select one: a. .54. b. .65. c. 2.063. d. 2.664.
Cloud seeding has been studied for many decades as a weather modification procedure. The rainfall in acre-feet from 20 clouds that were selected at random and seeded with silver nitrate follows: 18.0, 30.7, 19.8, 27.1, 22.3, 18.8, 31.8, 23.4, 21.2, 27.9, 31.9, 27.1, 25.0, 24.7, 26.9, 21.8, 29.2, 34.8, 26.7, 31.6. Can we support the claim that mean rainfall from seeded clouds exceeds 25 acre-feet? Use a = 0.01 O a. Test on Mean, Variance Known O b. Test on Variance and Standard Deviation O . Test on Population Proportion O d. Test on Mean, Variance Unknown
Three randomly selected children are surveyed. The ages of the children are 4, 5, and 9. Assume that samples of size n=2 are randomly selected with replacement from the population of 4, 5, and 9. Listed below are the nine different samples. Complete parts (a) through (d). 4,4 4,5 4,9 5,4 5,5 5,9 9,4 9,5 9,9 Question content area bottom Part 1 a. Find the value of the population median. enter your response here (Type an integer or a decimal. Do not round.) Part 2 b. Find the median of each of the nine samples, then summarize the sampling distribution of the medians in the format of a table representing the probability distribution of the distinct median values. Sample Median Probability ▼ 4 5.4 6.2 enter your response here ▼ 5.75 5.5 4.5 enter your response here ▼ 5 1.8 2.6 enter your response here ▼ 9.5 6.5 13 enter your response here ▼ 11 7 14…
Use the following data to calculate the expected frequencies for each category. fe Type fo A B Total 190 320 215 325
To evaluate the current status of physical activity in university students at BU, a student in Business surveyed students from their class by randomly selecting 12 rows and collecting data one 2 people from each of the selected rows. The question asked: "How many hours per week do you exercise?" What is the sample? O Students in Business at BU. O The 24 surveyed students. O Students at BU Everyone at BU. ONone of the above.
A foundation asked each person in a representative sample of high school students and in a representative sample of high school teachers which of the rights guaranteed by the First Amendment they thought was the most important. Suppose that the sample size for each sample was 1,000. Data consistent with summary values from the study are summarized in the accompanying table. Students = Teachers Freedom of Speech 658 400 USE SALT Most Important First Amendment Right Freedom of Religion Freedom to Peacefully Assemble Freedom of the Press 30 55 245 420 20 55 Freedom to Petition the Government 47 70 (a) Carry out a hypothesis test to determine if there is convincing evidence that the proportions falling into the five First Amendment rights categories are not the same for teachers and students. Use a significance level of a = 0.01. Calculate the test statistic. (Round your answer to two decimal places.) x²= Use technology to calculate the P-value. (Round your answer to four decimal places.)…

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