Spinning a coin, unlike tossing it, may not give heads and tails equal probabilities. I spun a penny 275 timesand got 122 heads. We wish to find how significant is this evidence against equal probabilities.a. What is the sample proportion of heads?Round to 3 decimal places.b. Heads do not make up half of the sample. Is this sample evidence that the probabilities of heads andtails are different?Take p to be the probability of getting heads in a spin of a penny. Which hypotheses do we want totest?O Họ: p = 0.5Họ: p > 0.5O Ho: p = 0.5Ho: p < 0.5O Ho: p = 0.5Ho: p 0.5O Ho: p 0.5Ho: p = 0.5c. Compute the z test statistic.Z =Round to 2 decimal places.

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Answered: Spinning a coin, unlike tossing it, may…

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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13) Approximately 59.4% of adults have added bleach to their laundry. Assume six adults are randomly selected. Find the probability that at most one adult have added bleach to their laundry. Round the answer to four decimals digits.
According to a recent poll about 33% of American adults are planning to dress up for Halloween this year. 250 American adults were asked "Are you planning to dress up for Halloween this year?. The number of surveyed people that responded “Yes” is recorded. The random variable X is ....what? The number of trials n is ....what? The probability of success is ...what %. The probability of failure is ...what %
Suppose you are interested in testing Ho - 12 vs. Ha 12. Suppose o is 6, n is 100, and is 11.5. What is the p-value? Please use the statistics table to find the probability.
Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
The WKU Herald reported that many students are unhappy with the cancellation of Spring Break. A sample of of 66 WKU students' opinion on the cancellation of Spring Break was collected. If 12% of all young people feel that WKU should have cancelled Spring Break, what is the probability that the proportion of those in the sample who feel that WKU should have cancelled Spring Break will be less than.1768? O a. 9222 O b. .4222 C. .0568 O d. .0778
Use the following results from a test for marijuana use. Among 144 subjects with positive test results, there are 21 false positive results. Among 139 negative test results, there are 4 false negative results. a. How many subjects are included in the study? b. How many of the subjects had a true negative result? c. What is the probability that a randomly selected test subject had a true negative result?
A card game requires that 44 cards are drawn from a 5252 card deck. Determine the following probabilities of a randomly drawn hand of 44 cards.Write your answers as percents rounded to 4 decimal places.Note: Aces are not considered Number Cards or Face Cards. Deck of Cards What is the probability that all 44 cards are clubs? % What is the probability that all 44 cards are number cards? % What is the probability that 22 cards are blackblack cards, and 22 cards are redred cards? % What is the probability 33 cards are face cards, and 11 cards are number cards? %
The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. Thank you!
Find the probability of student being both female and good?
1. You want to test to see if the claim is correct. A math teacher claims the probability that a person picked at random in Philadelphia is visiting the city is less than 40%.
In a recent survey, 45% of people surveyed indicated chocolate was their favorite flavor of ice cream. Suppose we select a sample of 8 people and ask them to name their favorite flavor of ice cream. a. How many of those in the sample would you expect to name chocolate? (Round your answer to the nearest whole number.) b. What is the probability exactly six of those in the sample name chocolate? (Round the probability to 5 decimal places and the final answer to 4 decimal places.) c. What is the probability six or more name chocolate? (Round your probability to 4 decimal places.)
a. Assuming that the rate of 23.9% is correct, find the probability that 398 or more of the 1482 adults have sleepwalked. b. Is that result of 398 or more significantly high? c. What does the result suggest about the rate of 23.9%?

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