Spoken Words Couples were recruited for a study of how many words people speak in a day. A random sample of 56 males resulted in a mean of 16,576 words and a standard deviation of 7871 words. Use a 0.01 significance level to test the claim that males have a standard deviation that is greater than the standard deviation of 7460 words for females (based on Data Set 24 “Word Counts”).

Q: A sample of 27 African Martial Eagles (the largest eagle in Africa) have a wingspan of 2.6 meters…

A:

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A: The properties of the normal distribution is,   The Normal distribution curve is and bell shaped…

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Q: Bundles of firewood are normally distributed with a mean of 20 pounds, and a standard deviation of 2…

A: According to the given information, we have Mean = 20 Standard deviation = 2 Z score = 1.50

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A:

Q: Ccording to researchers, the mean lengtn of imprisonment for motor-venicle-theit offenders in a…

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Q: In a Honolulu Heart Study, researchers are intered in studying the following question: Do people…

A: The summary of statistics is, x¯=54.85s=5.5n=101 The formula for calculating the observed test…

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A:

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Q: A group of researchers wants to see if being diagnosed with ADHD is associated with a higher level…

A: Given information, x¯=48s=6n=20μ=32 A) Test statistic: t=x¯-μsn =48-32620 =11.9257 Critical values:…

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A:

Q: Rashid is 84 inches tall. If the height of males in the United States is nor- mally distributed with…

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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

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A: Given that,population mean(u)=1590sample mean, x =1630standard deviation, s =320number (n)=17

Q: 7. A student received a score of 55 on a history test for which the class mean was 65 with a…

A: * SOLUTION :-  (7)   From the given information the calculation is provided below

Q: Does the sample size have an effect on the standard deviation of all possible sample means? Explain…

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Q: Which is cheaper: eating out or dining in? The mean cost of a flank šteak, broccoli, and rice bought…

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Q: Total enrollment in the Kalamazoo Public Schools have a mean and standard deviation of 11,957 and…

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Q: The depth of the snow in my yard is normally distributed, with a mean of 2.5 inches and a standard…

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Q: How Many Birds Do Domestic Cats Kill? "Domestic cats kill many more wild birds in the United States…

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Q: nstructor-created question Lon Heip In a test of the effectiveness of garlic for lowering…

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Q: What is the test statistic for this test?

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Q: "According to Dietary Goals for the US (1977), high sodium intake may be related to ulcers, stomach…

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Q: Airline companies are interested in the consistency of the number of babies on each flight, so that…

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Q: Many people now turn to the Internet to get information on health-related topics. A research article…

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Q: Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood…

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Q: Average Senior High School annual cost of tuition fee for all private school last year was P46,300.…

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Q: A local business offers test-taking courses for students who are planning to take the Graduate…

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Q: Rashid is 84 inches tall. If the height of males in the United States is normally distributed with a…

A: Given :                data point = 84                 mean = 70                standard deviation…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.