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
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,...
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)
The 90% confidence interval for the mean high school GPA of all GVSU students is 3.54...
The 90% confidence interval for the mean high school GPA of all GVSU students is 3.54 to 3.68. Which of the following is a reasonable conclusion? A About 5% of all GVSU students have a high school GPA that is more than 3.68. If you randomly choose a GVSU student, it's very likely that student has a high school GPA between 3.54 and 3.68. O c About 90% of all GVSU students have a high school GPA between 3.54 and...
According to a survey, 86% of high school students plan to attend college. Suppose 15 high...
According to a survey, 86% of high school students plan to attend college. Suppose 15 high school students are randomly selected. (round all answers to four decimal places) a.) Find the probability that all of them plan to attend college. Answer b.) Find the probability that exactly eight of them plan to attend college. Answer c.) Find the probability that at most eleven of them plan to attend college. Answer d.) Find the probability that at least twelve of them...
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,...
The 90% confidence interval for the mean high school GPA of all GVSU students is 3.54 to 3.68. Which of the following is a reasonable conclusion? A About 5% of all GVSU students have a high school GPA that is more than 3.68. If you randomly choose a GVSU student, it's very likely that student has a high school GPA between 3.54 and 3.68. O c About 90% of all GVSU students have a high school GPA between 3.54 and...
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