Exercise : if 37% of high school students said that they exercise regularly. Find the...
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Exercise : if 37% of high school students said that they exercise regularly. Find the...
In a group of 135 high school graduates, 65 studied mathematics, 76 studied history, and 37...
In a group of 135 high school graduates, 65 studied mathematics, 76 studied history, and 37 studied mathematics and history. If one of these students is randomly selected, find the probability that the student, if he or she took Mathematics, did not take History. Answer using 4 decimals.
Suppose that 48% of high school students would admit to lying at least once to a...
Suppose that 48% of high school students would admit to lying at least once to a teacher during the past year and 25% of students are male and would admit to lying at least once to a teacher during the past year. Assume that 50% of the students are male. What is the probability that a randomly selected student is either male or is a liar?What is the probability that a randomly selected student is either male or is a...
It was reported that 31.62% of high school students in a metropolitan area regularly smoke marijuana....
It was reported that 31.62% of high school students in a metropolitan area regularly smoke marijuana. If school administrators would like to estimate the proportion of students at their school who regularly smoke marijuana, how large a sample should be selected so that the margin of error is + 4% with a level of confidence of 98%? n=
A survey of 500 randomly selected high school students determined that 87 play organized sports (a)...
A survey of 500 randomly selected high school students determined that 87 play organized sports (a) What is the probability that a randomly selected high school student plays organized sports? (b) Interpret this probability. (a) The probability that a randomly selected high school student plays organized sports is Round to the nearest
When asked, "Do kids regularly carry weapons in your school?" 14,250 students said yes, and 115,339...
When asked, "Do kids regularly carry weapons in your school?" 14,250 students said yes, and 115,339 students said no. With a 95% level of confidence, find the margin of error (MOE) associated with the sample proportions. (Give the answer to one decimal place, if needed.)
1. Suppose the scores for high school seniors on the verbal portion of the SAT test...
1. Suppose the scores for high school seniors on the verbal portion of the SAT test have a population mean of 509 and a population standard deviation of 112. a. List the population and the variable. b. What do you know about the population distribution of SAT scores for high school seniors? (i.e. shape, center, spread) c. Suppose we randomly select 56 high school seniors from this population. What would you expect the shape, mean and standard deviation of the...
19 In a high school class, 50% of the students took Spanish, 25% took French and...
19 In a high school class, 50% of the students took Spanish, 25% took French and 30% took ncither B Let A = event that a randomly chosen student took Spanish, and B = event that a student took Frenh. Fil in cither a Venn diagram or a 2-way table and answer the questions: Fill in cither a BİB' a) Describe in words the meaning of the event AB. Find the probability of this event. b) Are the events A,...
Favorite snacks for high school students in Durham County are as follows: Male Female Fruit Loops...
Favorite snacks for high school students in Durham County are as follows: Male Female Fruit Loops 12 13 Pizza 8 15 Cookie Dough 30 12 1.) If I select one student at random, what is the probability that she will prefer pizza? 2.) What would be the probability that the student prefers Pizza, given that I select a male? 3.) What is the probability that one randomly selected student will be a female or prefer cookie dough? 4.) I am...
In a sample of 200 male students, 130 said they exercise regularly. In a sample of 300 female students, 180 said the...
In a sample of 200 male students, 130 said they exercise regularly. In a sample of 300 female students, 180 said they exercise regularly. Test the claim that male students exercise more regularly than female students, at the alpha = 0.05 significance level. Let the population of men be labeled M and the population of women be labeled W. = proportion of male that exercise = proportion of female students that exercise Hypothesis Test: : = : > Information: Test...
Let U be the event that a randomly chosen high school student is an upperclassman. Let...
Let U be the event that a randomly chosen high school student is an upperclassman. Let C be the event that a randomly chosen high school student has a car. Identify the answer which expresses the following with correct notation: Of all the high school students who are upperclassmen, the probability that a randomly chosen high school student has a car. Select the correct answer below: P(C) AND P(U) P(C|U) P(U|C) P(U AND C)
It was reported that 31.62% of high school students in a metropolitan area regularly smoke marijuana. If school administrators would like to estimate the proportion of students at their school who regularly smoke marijuana, how large a sample should be selected so that the margin of error is + 4% with a level of confidence of 98%? n=
A survey of 500 randomly selected high school students determined that 87 play organized sports (a) What is the probability that a randomly selected high school student plays organized sports? (b) Interpret this probability. (a) The probability that a randomly selected high school student plays organized sports is Round to the nearest
19 In a high school class, 50% of the students took Spanish, 25% took French and 30% took ncither B Let A = event that a randomly chosen student took Spanish, and B = event that a student took Frenh. Fil in cither a Venn diagram or a 2-way table and answer the questions: Fill in cither a BİB' a) Describe in words the meaning of the event AB. Find the probability of this event. b) Are the events A,...
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