statistics

posted by .

It is known from the records of the City Schools that the standard deviation
of Algebra scores is 6.0. A sample of 200 students from the system was
taken and was found out that the sample mean score is 75. Previous tests
showed the population mean to be 70. Is it safe to conclude that the
sample is significantly different from the population? Use α= 0.05.

  • statistics -

    wdasd

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    what are the mean and standard deviation of a sampling distribution consisting of samples of size 16?
  2. statistics

    A student was asked to compute the mean and standard deviation for the following sample of n _ 5 scores: 81, 87, 89, 86, and 87. To simplify the arithmetic, the student first subtracted 80 points from each score to obtain a new sample …
  3. statistics

    d. There are 200 students in a sample. How many of these students will have scores that fall under the score of 41?
  4. statistics

    Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4 There are 200 students in a sample. How many of these students will have scores …
  5. Statistics

    Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. There are 200 students in a sample. How many of these students will have scores …
  6. statistics

    IQ scores are normally distributed with a mean of 105 and a standard deviation of 18. Assume that many samples of size n are taken form a large population of people and the mean IQ score is computed for each sample. If the sample size …
  7. 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 …
  8. Math

    I need help with this these two problem PLEASE!!! For a population with a mean of μ  80 and a standard deviation of   12, find the z-score corresponding to each of the following samples. a. M  83 for a sample of n  4 scores …
  9. Statistics

    For a population with a mean of µ=60 and standard deviation of Ợ=24, find the z=score corresponding to each of the following samples a. M=63 for sample of n=16 scores b. M=63 for sample of n=36 scores c. M=63 for sample of n=64 …
  10. statistics

    1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions. Instead, …

More Similar Questions