A population has a mean 21 and standard deviation 11 Find the z-score for a population value of 43. 0.57 11.67 0.08 12.24 2.0 Show your work: Draw the normal curve and put in the given information; then convert the X values into their corresponding Z scores.
A population has a mean 21 and standard deviation 11 Find the z-score for a population value of 43.
- 0.57
- 11.67
- 0.08
- 12.24
- 2.0
Show your work: Draw the normal curve and put in the given information; then convert the X values into their corresponding Z scores.
Fill in the missing value so that the following table represents a probability distribution. Show your work
| x | -4 | -3 | -2 | -1 |
| p(x) | 0.42 | 0.08 | ? | 0.05 |
- 0.26
- 0.45
- 0.33
- 0.25
The following table presents the probability distribution of the number of vacations X taken last year for a randomly chosen family. Find the probability that a family took at least 3 vacations last year. Show your work
| x | 0 | 1 | 2 | 3 | 4 |
| p(x) | 0.05 | 0.69 | 0.17 | 0.07 | 0.02 |
a.0.09
b.0.07
c.0.26
d.0.91
If a
- The
median is 25 and themode is 45. - the median is 35 and the mode is 45.
- the median is 45 and the mode is 25.
- the median is 35 and the mode is 35.
Show the steps as usual about the normal curve and Z scores
If a normal distribution has a mean of 35 and a standard deviation of 5, then
- The median is 35 and the mode is 35.
- the median is 35 and the mode is 35.
- the median is 35 and the mode is 35.
- the median is 40 and the mode is 30.
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