Statistics Math

posted by .

1. What type of car is more popular among college students, American or foreign? One hundred fifty-nine college students were randomly sampled and each was asked which type of car he or she prefers. A computer package was used to generate the printout below for the proportion of college students who prefer American automobiles.

SAMPLE PROPORTION = .0.388630
SAMPLE SIZE = 159

UPPER LIMIT = .464240
LOWER LIMIT = .331153

What point estimate for the proportion of students prefer foreign automobiles?
A) .0.388630
B) .464240
C) .331153
D) .0.61137

I am having trouble answering this problem? I don't know where to begin.


2. A marketing research company is estimating which of two soft drinks, Mountain Dew or Coke, college students prefer. A random sample of 88 college students produced the following 95% confidence interval for the proportion of college students who prefer Mountain Dew: (0.071, 0.093)

Is the sample size large enough for the interval to be valid?
A) No, the sample size is too small.
B) Yes, the sample was randomly selected from an approximately normal population.
C) No, since mathml equation the sample size is not large enough.
D) Yes, since we know that there are more than 880 college students.

I would say D is the answer because of the population size. Please check my answer. Thx!

  • Statistics Math -

    1. The best point estimate for p is the sample proportion. Answer: A

    2. I agree with your choice.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    Do students at various colleges differ in how sociable they are?
  2. college

    Do students at various colleges differ in how sociable they are?
  3. math

    a college conducted a survey and determined that 68% of the students attending the college owned a car.what is the ratio of the number of students who own cars to total numbers of students
  4. statistics

    Among the 500 first year students of college, 270 students study computer science, 345 students study mathematics, and 175 students study both computer science and mathematics. If one student is selected at random, find the probability …
  5. statistics

    Thirty percent of the students in a high school face a disciplinary action of some kind before they graduate. Of those students, 40% go on to college. Of the 70% who do not face a disciplinary action, 60% go on to college. What percent …
  6. statistics

    when 325 students are randomly selected and surveyed, it is found that 117 own a car. Construct a 99% confidence interval estimate of the true proportion of all college students who own a car.
  7. statistics

    In order to plan for parking and transportation needs at a college, administrators asked students how they got to school. Some came by bus, some came by car and the others used “personal “ transportation – bikes, skateboards, …
  8. Ashworth College

    A study of students taking Statistics 101 was done. Four hundred students who studied for more than 10 hours averaged a B. Two hundred students who studied for less than 10 hours averaged a C. This difference was significant at the …
  9. Stat

    "Records show that 8% of all college students are foreign students who also smoke. It is also known that 50% of all foreign college students smoke. What percent of the students at this university are foreign?
  10. algebra

    What type of sampling is this: Group the students in a local college by year and then randomly select 15 students from each group.

More Similar Questions