Fill in the blanks.

Question 1

Suppose X is a normal random variable with mean 70 and standard deviation 3. Then P(X = 3) = ____________________.

Question 2

Because the value of the ____________________ varies from sample to sample, we can regard it as a new random variable, created by sampling.

Question 3

The hypothesis testing procedure begins with the assumption that the null hypothesis is ____________________.

Question 4

When the population standard deviation is unknown and the population is normal, the test statistic for testing hypotheses about is the ____________________-distribution with ____________________ degrees of freedom.

Question 5

SSE stands for ____________________ of squares for ____________________. Question 6 There are three measures of central location; the mean, the _________________ and the ____________________. Question 7

According to the Empirical Rule, if the data form a bell shaped normal distribution, approximately ____________________ percent of the observations will be contained within 2 standard deviations around the mean.

Question 8

The method used to find the best fitting line through the observations is called the ____________________ method.

Question 9

If two events are complements, their probabilities sum to ___________________.

Question 10

The total area under f(x) for a continuous random variable must equal ______