Post a New Question

stat

posted by .

The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Z score for significance in a study involving one participant is 1.96. If the raw score obtained by the participant is 45, what decisions should be made about the null and research hypotheses?

  • stat -

    Z = (score-mean)/SD

    Calculate the Z score from your data above.

    Do you think a null hypothesis can be accepted or rejected with n = 1?

  • stat -

    Rejected

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math (statistics

    John's z-score on a college entrace exam is 1.3. If the raw scores have a mean of 480 and a standard deviation of 70 points, what is his raw score?
  2. math

    Find the z-score for the given raw score, mean, and standard deviation. Assume a normal probability distribution for raw score = Raw score = 66, µ =60 , and ó =6
  3. statistics

    Eric has computed that it takes an average (mean) of 17 minutes with a standard deviation of 3 minutes to drive from home, park the car, and walk to his job. One day it took Eric 21 minutes to get to work. You would use the formula …
  4. Statistics

    I am having trouble with this problem. A participant in a cognitive psychology study is given 50 words to remember and later asked to recall as many as he can of them. This participant recalls 17. What is the (a)variable, (b)) possible …
  5. PSY315

    Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For each, give (a) the Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be …
  6. statistics

    So if a depression scale has 30 items in it, and if an individual gets a score of 20 what does this mean?
  7. statistics

    So if a scale has 30 items in it, and if an individual gets a score of 20 what does this mean?
  8. statistic

    In a population of exam scores, a score of X  48 corresponds to z1.00 and a score of X  36 corresponds to z  –0.50. Find the mean and standard deviation for the population. (Hint: Sketch the distribution and locate the two scores …
  9. Stats

    A study found that for adults the general self-efficacy scale mean score was 35 and standard deviation was 12. A group of clients (n=14) was measured for their general self-efficacy with the same measure and found having 40 with standard …
  10. STAT

    The score on a test are normally distributed with a mean of 75 and a standard deviation of 6. If the professor wishes to give A’s to the top 4%, what would be the cutoff score be for A’s?

More Similar Questions

Post a New Question