Answer:
The value of X is 1
Step-by-step explanation:
Trust me i did this already.
Answer:
75
Step-by-step explanation:
75+88+34+88+64+101 =450
450/6 = 75
add each week together, then divide by the total number of weeks
Answer:
She divided wrong
Step-by-step explanation:
Using the normal distribution, the area underneath the shaded region <u>between the two z-scores</u> is given by:
C. 0.6766.
<h3>Normal Probability Distribution</h3>
The z-score of a measure X of a normally distributed variable with mean and standard deviation is given by:
- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
Hence, for this problem, the area is the <u>p-value of z = 0.75 subtracted by the p-value of z = -1.3</u>.
Looking at the z-table, the p-values are given as follows:
Then:
0.7734 - 0.0968 = 0.6766.
Which means that option C is correct.
More can be learned about the normal distribution at brainly.com/question/15181104
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The 90th percentile corresponds to Z ≈ 1.28155.