Which one is it pls help i dont understand

Mathematics

2 answers:

Zepler [3.9K]3 years ago

4 0

The answer is C hope this helps!!

Vlada [557]3 years ago

4 0

Its the one in the bottom left hand corner

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The weights (lbs.) of the 5 offensive linemen for the High School football team are as follows: 215, 225, 285, 260, and 250. The

a_sh-v [17]

The correct answer is: C. 247

Add all of the weights

215 + 225 + 285 + 260 + 250 = 1235

Divide the total weight by the number of weights given

1235/5 = 247

6 0

4 years ago

The College Student Journal (December 1992) investigated differences in traditional and nontraditional students, where nontradit

IceJOKER [234]

Answer:

94.52% probability that the random sample of 100 nontraditional students has a mean GPA greater than 3.42.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

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 problem, we have that:

$\mu = 3.5, \sigma = 0.5, n = 100, s = \frac{0.5}{\sqrt{100}} = 0.05$