Answer:
128 pages
Step-by-step explanation:
In total, Marty had read 128 pages of his book.
6 divided by 2 times in brackets 1 plus 2Work this out please.
2 answers:
Answer: 12
Step-by-step explanation:
<u>Given worded expression</u>
6 divided by 2 times in brackets 1 plus 2
<u>Convert wordings to numerical expression</u>
6 ÷ 2 × (1 + 2)
<u>Simplify value in parentheses/brackets</u>
=6 ÷ 2 × 3
<u>Simplify by division</u>
=3 × 4
<u>Simplify by multiplication</u>
=
Hope this helps!! :)
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Answer:
42.22% probability that the weight is between 31 and 35 pounds
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
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 problem, we have that:
What is the probability that the weight is between 31 and 35 pounds
This is the pvalue of Z when X = 35 subtracted by the pvalue of Z when X = 31. So
X = 35
has a pvalue of 0.5557
X = 31
has a pvalue of 0.1335
0.5557 - 0.1335 = 0.4222
42.22% probability that the weight is between 31 and 35 pounds