Which answer is correct?

Mathematics

1 answer:

Dafna1 [17]3 years ago

3 0

Last one, the line I as solid so it is greater tan or less than. it's shaded above so y is greater

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Convert 86 to a z-score

Semmy [17]

Answer:

Step-by-step explanation:--0.9

5 0

3 years ago

Precipitation for the month of March was 6 ½ inches less than average. In April, the precipitation was 2 ⅜ inches less than aver

deff fn [24]

Answer:

The precipitation for both March and April was 8 7/8 inches below average

Step-by step explanation;

For the month of march, precipitation was 6 1/2 inches less than average

For the month of April, precipitation was 2 3/8 inches left.

Now we want to calculate how many inches less than average was precipitation in both wants

What we simply do here is to add the inches with which they were both left than average in both months

That would be;

6 1/2 + 2 3/8

= 13/2 + 19/8 = (52 + 19)/8 = 71/8 = 8 7/8 inches

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3 years ago

A random sample of 121 checking accounts at a bank showed an average daily balance of $280. The standard deviation of the popula

klasskru [66]

Answer:

False

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .