What is thr probability of rolling a 5 on a six-sided number cube?

What is the median of the 19 numbersplotted in the line plot below?

mars1129 [50]

Recall that the median of a set of numbers is the number in the middle of the set, after the numbers have been rearranged from lowest to highest.

From the plot, we get that the number, arranged from lowest to highest are:

$40,40,40,40,40,41,41,41,42,42,43,43,43,43,44,44,44,45,45.$

The number in the middle of the above set is:

$42.$

Therefore the median of the given numbers is:

$42.$

Answer: 42.

5 0

1 year ago

A community is considering raising funds to pay for improvements to the community swimming pool. To measure the

dezoksy [38]

Answer:

All residents of the community

Step-by-step explanation:

Not sure if this is fully correct but the 2nd and 3rd option is wrong (Edg 2021)

6 0

3 years ago

cc is guaranteed the larger of $500 per week or 7% of sales. last week she 4 sold $6785. How much was her check for?

weeeeeb [17]

Answer:

Step-by-step explanation:

6785*7%=474.95 in commission

500 per week salary is more

6 0

3 years ago

Read 2 more answers

An elementary school class ran 1 mile in an average of 11 minutes with a standard deviation of 3 minutes. Rachel, a student in t

Natali5045456 [20]

Answer:

a) Kenji's time had a lower z-score, which means that he is better compared to other runners on his level, and better to his peers compared to Nedda.

b) Rachel, because her time had the lowest z-score.

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

The lower the time, the better the runner is. So whoever's time has a lower z-score is a better runner. So initially, we find the z-score of each student's time.

An elementary school class ran 1 mile in an average of 11 minutes with a standard deviation of 3 minutes. Rachel, a student in the class, ran 1 mile in 8 minutes.

This means that for Rachel's time, we have that $X = 8, \mu = 11, \sigma = 3$ . So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{8 - 11}{3}$

$Z = -1$

A junior high school class ran 1 mile in an average of 9 minutes, with a standard deviation of 2 minutes. Kenji, a student in the class, ran 1 mile in 8.5 minutes.

This means that for Kenji's time, we have that $X = 8.5, \mu = 9, \sigma = 2$ . So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{8.5 - 9}{2}$

$Z = -0.25$

A high school class ran 1 mile in an average of 7 minutes with a standard deviation of 4 minutes. Nedda, a student in the class, ran 1 mile in 8 minutes.

This means that for Nedda's time, we have that $X = 8, \mu = 7, \sigma = 4$ . So