A school psychologist wanted to know if the class size changed from small (n=10), medium (n=25) to large (n=100) and attendance of low and high.   a. test of independence b.

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Q: 12 o.ズ こ \-525000 to ) %31

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A: Given, Sample size = 696 Sample proportion = 0.30   The null and alternative hypothesis is:

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Q: b. Assume that a prior survey suggests that about 35% of air passengers prefer an aisle seat. n= 207…

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Q: On his 6 Algebra tests, Omar received the following scores: 82, 44, 92, 86, 77 & 82. Find the mean,…

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Q: 4b) For the following scores, find the median 43, 32, .64, 21, 29, 51, .89, .64

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Q: A small warehouse employs a supervisor at $1350 a week, an inventory manager at $770 a week, six…

A: Given 1.supervisor=$1350 2. inventory manager=$770 3.six stock boys=$420 4.four drivers=$520

Q: school psychologist wanted to know if the class size changed from small (n=10), medium (n=25) to…

A: The Chi-Square test of independence is known as a method that is used to define whether there is a…

Q: The 3rd quartile of the ages of 300 students of Math class is 22 years. Which of the following…

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Q: 15) fill in the blank. What is the p-value? What can you conclude about the quality of the…

A: Introduction: It is required to identify the p-value, and conclude about the equality of the…

Q: 7. TECHNOLOGY For a business report on technology use, Damell asks a random sample of 72 shoppers…

A: Given:     Own a tablet computer Do not own a tablet computer Total Own smart phone 9 42 51…

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Q: The third quartile of 4, 6, 8, 9, 9, 11 is: Select one: O a. 8 O b. 5.5 Oc. 9.5 O d. 8.5

A: The third quartile (or upper quartile or 75th percentile) is the median of the upper half of the…

Q: SAMPLING VS. RELIABILITY: "The larger the sample,the more reliable the results." Do you agree or…

A: Sampling is the method that used to take sample from the population. There are different methods…

Q: We want to know the opinions of the people of a city with a population of 50,000. One person…

A: Hey there.! thank you for posting your question. Hope you're doing well.   Given : The people of a…

Q: the sample size affect the margin of error, E? size increases, the margin of error stays the same.…

A: According to the given information in this question, we need to identify the correct option about…

Q: The test statistic is: (round to 3 places) The p-value is: (round to 3 places)

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Q: Which is more variable: a sample of 1000 people where p=.05 or a sample of 1000 people where p=0.5?…

A: Given that  Which is more variable: a sample of 1000 people where p=.05 or a sample of 1000 people…

Q: if the 90% Ci for the population mean is (-2. 58, 7.54) what is the sample mean О a.248 ОБ. 10.12 O…

A: Confidence interval is defined as the range that contains the value of a true population parameter.…

Q: Ritais considering moving to Little Rapids for a new job. During hersearch for a house, she…

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Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Given that, Sample size n=54 Sample proportion of automobile driver fatalities that involved an…

Q: n below: Data for Gender vs. Orientation Attendance Women Men 371 419 be concluded at the a = 0.05…

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Q: What is the most preferred flavor of coffee at Starbuck? A survey was done with 40 customers of…

A: The objective of the question is to understand the statistical terms in the context of a survey…

Q: The value of the third quartile for a data set is 65. This means that: O 25% of the values in that…

A: Given that, The value of the third quartile for a data set is 65.

Q: Which of these conclusions and justifications is the MOST reasonable?

A: Solution:

Q: For an acceptable quality level (AQL) of 1%, a lot tolerance proportion defective (LTPD) of 4% and a…

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Q: What percentage of scores fall between the following z scores: -1 to +1; -1 to +2; and -1 to +3?

A: a) -1 to +1 = P(-1<z<1) = P(Z<1)-P(Z<-1)  =0.8413-0.1587 =0.6826 =68.26%

Q: Explain: a. Null and Alternative hypothesis b. One-tailed and two-tailed tests of Hypothesis c.…

A: a. Null and alternative HypothesisA general assertion that there is no correlation or relationship…

Q: The third quartile of 4, 6, 8, 9, 9, 11 is: Select one: O a. 8 O b. 5.5 Oc. 9.5 d. 8.5

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Q: What is the third quartile of the number of accidents per month?

A: We have to find the third quartile for the given data.

Q: The third quartile of 100, 140, 170, 110, 155, 220, 155, 125 is: O a. 166.25 O b. 145 Oc There is no…

A: A quartile is a measure of partition, which divides the data into equal parts. Quartile divides the…

Q: Which chi-square test should be used on the following study? A psychotherapist wanted to see what…

A: The chi-square test of independence is known as the method that is used to define whether there is a…

Q: Exercise 1: Suppose you know that income changes for year 2020 for married couples follow a…

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Q: The goals scored per game by a soccer team represent the first quartile for all teams in a league.…

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Q: What represents a trial of taking six shots

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Q: The test statistic ( tTEST ) Blank 1 Blank 1 Add your answer

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Q: What is the standard error of the sample proportion of people that like a product if you have a…

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Q: Before the furniture store began its ad campaign, it averaged 130 customers per day. The manager is…

A: a. For this study , we should use t-test The task here to test whether the population average of…

Q: What is the name of the test used?

A: H0 : Die is fair H1 : Die is not fair

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Q: To test for any significant difference in the number of hours between breakdowns for four machines,…

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Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

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Q: 2: The median age of the children is: 29 30.5 28.5 28

A: Given ages are, 36,42,18,32,22,22,25,29,30,31,19,24,35,29,26,36,24,28   Sort the data in Ascending…

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Q: You want to compare the average working time of customer service from two companies. 9…

A: Two proportion z test used for camaring two proportion Two sample t test used to. campare the…