stats

posted by .

Question 5 of 10 A z-score of 2.0 is two standard deviations above the mean of the distribution (t).
True
False
I chose answer A

The z scores is a ratio of difference to variability (t).
True
False
I chose False


Question 6 of 10 What’s the probability that an individual, selected at random, will score below the mean on any normally distributed characteristic? (Points : 1)
p = 0
p = .1
p = .5
p = 1.0
I chose p=0

A statistically significant outcome in a z-test indicates which of the following? (Points : 1)
The sample is not characteristic of the population.
The sample could not have been randomly selected.
The sample is characteristic of the population.
The sample represents other samples in the original population.

I chose the last one
Question 8 of 10 A distribution where the mean and standard deviation have pre-determined values calls for ________. (Points : 1)
raw scores
z scores
modified standard scores
percentile rankings


I chose modified standard scores

Question 9 of 10 Which is true of a one-tailed test? (Points : 1)
The alternate hypothesis specifies the direction of difference.
The null hypothesis specifies the direction of difference.
There is no alternate hypothesis.
The null hypothesis becomes the research hypothesis.




I chose there is no alternate hyothesis

Question 10 of 10 What is the critical value of t for a two-tailed t-test in which n = 10? (Points : 1)
2.262
2.228
.05
.01
I chose .05

  • stats -

    I'll help with the last two:
    9. The alternate hypothesis shows a specific direction in a one-tailed test.
    10. 2.262 (degrees of freedom would be n - 1)

  • stats -

    A statistically significant outcome in a z-test indicates which of the following? (Points : 1)
    The sample is not characteristic of the population.
    The sample could not have been randomly selected.
    The sample is characteristic of the population.
    The sample represents other samples in the original population.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to form sodium zincate according to the following reacton: Zn(s) + 2NaOH(aq) Na2ZnO2(aq) + H2(g) Answer true or false for each of the following statements …
  2. Chemistry: Answer check please!

    1. Reactions follow the law of conservation of mass. a.) True b.) False Answer: True 2. Reactants are the materials used in a chemical reaction. a.) True b.) False Answer: True 3. In a chemical equation, the mass on the left of the …
  3. statistics

    1. Which of the following statements are correct?
  4. Statistics

    True or False? As the degrees of freedom increase, the Student's t distribution becomes more like the standard normal distribution. Answer True False
  5. 7th grade health true or false

    11. Disagreements are a normal part of life. (1 point) True False 12. Talking to a trustworthy adult is the best way to stop sexual abuse and get help. (1 point) True False 13. Some conflicts are made worse by peer negotiation. (1 …
  6. Statistics

    The mean of a distribution of 1000 individuals' blood pressure is 85. If this number were translated into a Z score it would be equal to +1 standard deviations. True or False?
  7. English

    Leonardo da Vinci believed in soper vedere, or the power of observation. While his contemporaries looked for scientific truth in the writings of ancient scholars, da Vinci's theories were based on empirical research, that which he …
  8. Foundations of Measurement

    Approximately 400,000 students took the GRE in 2009. Observed mean for the Verbal score was 540 with a standard deviation of 80, and the observed mean quantitative score was 500 with a standard deviation of 100. Assuming distribution …
  9. Fitness (Check answers)

    1) Sitting in class wearing ear buds during a lecture is effective listening. TRUE OR FALSE ~ (my answer is FALSE) 2) Defense mechanisms should be used as often as possible to deal with uncomfortable emotions. TRUE OR FALSE ~ (my answer …
  10. Fitness (Check answers)

    6) Gang member often have weapons and are involved in violence. TRUE OR FALSE ~ (my answer is TRUE) 7) Being disruptive in class and getting angry easily could be sign of abuse. TRUE OR FALSE ~ (my answer is FALSE) 8) People with high …

More Similar Questions