Research exam 2!

You are testing a null hypothesis H0 with a=0.05 and B=0.20. What is probability of rejecting a true null hypothesis

We have a distribution like this:24,12,9,12,9,24. Which has same stat values for this data?

What is the difference between a nominal scale and an ordinal scale?

For a one-mean left-tailed t-test with a sample size of 10 and a=0.05,what is the critical value(tcrit)?

Which of the following is an interval level of measurement?

Given drug X: 8.1,-7.0,2.0,3.0,-2.4,2.2,5.5,-5.3. What is sample size(n) and sample mean(x)

Which of the following is a continuous variables?

The significance level and P-value of a hypothesis test are given as a=0.01 and p value=0.03. Should null be rejected?

Which of the following is a continuous variable?

We have a list of numbers: which of the following information can we NOT get from a box plot?

Which of the following statements concerning the areas under the standard normal curve is/are true?

Sampling errors are made by selecting non-representative samples. They are mistakes that should be avoided

Please rank the 4 levels of measurements from the lowest to highest level:

Which of the following is not available from a box plot

We use ___ to describe the population and ___ to describe the sample

The power of a hypothesis test increases when:

Dichotomous variables are a type of discrete variable that can take only?

Find the sample standard deviation for the following data: 2,6,15,9,11,21,5,4,8,19

Adult IQ scores are normally distributed with u=100 and o=15. What % of population do u expect IQ between 110-120

Which one of the following changes will make the confidence interval narrower?

In a left skewed distribution, which of the following central tendency is correct?

If a statistic is significant from 1 at the 0.05 levels the 95% CI will not contain 1

The probability of rejecting a true null hypothesis is known as

The standard deviation of the sampling distribution of means is also referred to as ___

What is the probability corresponding to a a-score grater than -1.33

We have a list of numbers:10,6,7,9,15,10,18,5. We know mean is 10. What is the missing number?

For a t-curve with df=11, what is value of t(0.10)?

In a typical right skewed distribution, which of the following relationships between different central tendency is right