10 Sep Question 1 Indicate whether the statement is True or False
Question 1
Indicate whether the statement is True or False
1. Football jersey numbers are quantitative data-FALSE the numbers are used to identify the players position in the field.
2. There are 107 that are 7-digits long- FALSE since there are restrictions on the 7 digit combinations that form phone numbers. For example, the first digit can’t be 1, that indicates a long distance number.
3. The means of means is not the same as the original mean-TRUE
4. TRUE- The formula for obtaining the upper and lower bounds of the confidence interval by adding and subtracting the margin of error from the mean
5. FALSE a survey of how many children do you have would result in a normal distribution.
6. TRUE-A survey of the question do you have children will result in a binomial distribution because there can only be two outcomes; Yes or No.
7. FALSE-A larger sample size decreases the margin of error
8. TRUE- Parameters are numbers that summarize data for an entire population. Statistics are numbers that summarize data from a sample
9. TRUE-The points scored in a baseball game are discrete data
10. FALSE- A right-skewed distribution will have the mean to the right of the median.
11. FALSE-Association does not imply causation
12. TRUE-The probability of an event happening and the complement of that event should b equal to one.
Question 2
1. A
Since the results of the survey have a 4% chance (p=0.04) which is less than the significant level (0.05) we reject the null hypothesis.
2. A
A comparison bar graph would be most appropriate
3. C
The probability of picking up a club is 13/52, since each deck contains 13 club (1♣, 2♣, 3♣, 4♣, 5♣, 6♣, 7♣, 8♣, 9♣, 10♣, J♣, Q♣, K♣) cards.
4. B
There are four Aces in the entire deck; hence, the probability of choosing an ACE is 4/52
5. D
The probability of the first Ace is 4/52 and the second Ace is 3/51; P(A and B)=(4/52*3/51)
6. A
The Z score is the number of standard deviations a data is above or below the mean
7. D
8. C
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