Variance of the number of them who own their car
= npq
= 40*0.72*0.28
= 8.064
Option E is correct.
D Question 4 1 pts It has been found that 72% of college students own a...
It has been found that 35% of college students own a car. If 40 students are selected at random, what is the variance of the number them who own their car?
Question 4 4) When 328 college students are randomly selected and surveyed, it is found that 122 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car. O 0.303 <p<0.441 O 0.320 < p < 0.424 O 0.328 <p<0.416 O 0.310 < p <0.434 Question 5 Assume that the population has a normal distribution. 51 A sociologict doulonc a tort to moncuro dar tovarde public
4* When 308 college students are randomly selected and surveyed, it is found that 129 own a car. Find a 95% confidence interval for the true proportion of all college students who own a car. O 0.363 <p <0.473 O 0.310 < p < 0.434 30.364 < p < 0.474 0.362 < p < 0.474
1) When 327 college students are randomly selected and surveyed, it is found that 121 own a car. Construct and interpret a 99% confidence interval for the percentage of all college students who own a car. Be sure to check the conditions.
When 308 college students are randomly selected and surveyed , it is found that 129 own a car . Find a 95% confidence interval for the true proportion of all college students who own a car.
When 308 college students are randomly selected and surveyed , it is found that 129 own a car . Find a 95% confidence interval for the true proportion of all college students who own a car.
when 294 college students are randomly selected and surveyed, it is found that 130 own a car. Find a 90% confidence interval for the proportion of all college students who own a car. Show all work!!
QUESTION 1 College students Suppose a recent study of 1,000 college students in the U.S. found that 8% of them do not use Facebook. Which of the following describes the population for this example? 1. All college students in the U.S. 2. The 1,000 college students who participated in the study, 3. All college students in the U.S. who do not use Facebook 4. The 8% of college students who do not use Facebook. QUESTION 2 Suppose you want to...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X=the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters B. Find the probability that 8 students...
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are randomly selected, what is the probability that none own their car? (Hint: think multiplication rule, selecting 4 individual students. in 5 is the same as 20%, right?) O A. 19/20 O B. 624/625 O c. 256,625 O D. 16/20 QUESTION 18 Which of the following variables is NOT discrete? O A the number of Oscar nominations Meryl Streep has received O B. the number...