Mark T or F, and explain the reasons for any three of these
T F Q1:The number of individuals in a family is a continuous variable.
T F Q2:John Cortiz is examining the results of a study that covered the entire population. John is examining a census
T F Q3:If the population distribution is skewed left, the mean will be less than the median, and if the population distribution is skewed right, the mean will exceed the median.
T F Q4:When two events are mutually exclusive, the probability that either event will occur can be found by simply multiplying together their individual probabilities of occurrence.
T F Q5: A random sample of 64 cars passing a check point on a certain highway showed a mean speed of 60 mph. The standard deviation of speeds is known to be 15 mph. In this case 60 mph is a point estimate of the population mean speed on this highway.
T F Q6: According to the Central Limit Theorem, the shape of the sampling distribution of sample mean (given that n ³ 30) will be normal, whether or not the shape of the population is normal.
T F Q7: If the sample size is large (n ³ 30), the standard deviation of the sample mean will equal the population standard deviation for that random variable.
T F Q8: Level of confidence is another name for level of significance.
T F Q9: If we would reject a null hypothesis at the 5% level, we would also reject it at the 1% level.
T F Q10: In a one-way ANOVA, when the null hypothesis is false, the calculated F-ratio would exceed the critical value of F for the chosen significance level.
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