Molli purchased 8 apples for $4.25.

A college faculty consists of 400 men and 250 women. The college administration wants to draw a sample of 65 faculty members to

galina1969 [7]

Answer:

The type of sample is Stratified sampling.

Step-by-step explanation:

Consider the provided information.

Types of sampling.

Random sampling is similar to placing the name of everyone in a hat and pulling out a few names.

In Systematic sampling, we list of elements is counted off.

Convenience sampling: data which is readily available is used. That is, the first people are running into by the surveyor.

In Cluster sampling, we divide the population into groups, usually geographically.

In Stratified sampling we divide population into groups called strata. but this time population might be separated into males and females.

Here the population is divided into groups of males and females therefore it is stratified sampling.

Hence, the type of sample is Stratified sampling.

5 0

2 years ago

What's the equation for circumference

OleMash [197]

If youknow the diameter of the circle, then
   Circumference = (π) x (Diameter).

If youknow the radius of the circle, then
   Circumference = (π/2) x(radius).

If you know the area of the circle, then
   Circumference= 2 √ (π A) .

8 0

2 years ago

Read 2 more answers

Weather forecasters use a barometer to measure

Zepler [3.9K]

Answer: air pressure

Whenever you hear things like "high pressure" or "low pressure" on weather reports, they measured the pressure using a barometer. Knowing the air pressure helps determine if there is a higher chance of rain or storms for instance.

Typically but not always, high pressure correlates to sunny days and dry weather. Low pressure often brings about rain. This is of course a very oversimplified viewpoint.

4 0

10 months ago

Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are common catches. The mean length of

julia-pushkina [17]

Answer:

Due to the higher z-score, Stewart caught the longer fish, relative to fish of the same species

Step-by-step explanation:

Problems of normally distributed samples are 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.

Who caught the longer fish, relative to fish of the same species?

Whosoever fish's had the higher z-score.

Stewart caught a bluefish that was 283mm

The mean length of a bluefish is 264 millimeters with a standard deviation of 57mm.

So we have to find Z when $X = 283, \mu = 264, \sigma = 57$