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MrRissso [65]
3 years ago
11

Identify the type of sampling (stratified, systematic, convenience, or cluster) that best describes each of the following cases:

(a) Splitting the FHSU student population into classes (freshmen, sophomore, etc.) and the selecting 50 students from each class to participate in a study. (b) Looking through the student directory, and choosing to email surveys to every 100th person. (c) Randomly selecting 10 on-campus courses, and then surveying all students in these 10 classes.
Mathematics
1 answer:
SVEN [57.7K]3 years ago
8 0

Answer:

(a) Stratified

(b) Systematic

(c) Cluster

Step-by-step explanation:

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The amount of bleach a machine pours into bottles has a mean of 36 oz. with a standard deviation of 0.55 oz. Suppose we take a r
pogonyaev

Answer:

0.9836

Step-by-step explanation:

8 0
3 years ago
Using a stopwatch, Tyrone determines it takes him 58. 2 minutes to travel 30 miles to work. The stopwatch measures to hundredths
nekit [7.7K]

The most accurate determination for the number of 45.36 feet per second Tyrone traveled on his way to work.

Given that,

Using a stopwatch Tyrone determines it takes him 58.2 minutes to travel 30 miles to work the stopwatch measures to hundredths of a minute going by the accuracy of the stopwatch.

We have to determine,

Which is the most accurate determination for the number of feet per second Tyrone traveled on his way to work?

According to the question,

Tyrone determines it takes him 58.2 minutes to travel 30 miles to work,

the stopwatch measures to hundredths of a minute going by the accuracy of the stopwatch are determined by,

\rm  Speed = \dfrac{Distance}{Time}

Substitute the values in the equation,

\rm  Speed = \dfrac{Distance}{Time}\\\\Speed = \dfrac{30}{58.2}\\\\Speed = \dfrac{50}{97}  \ miles \ per \ minute

If 1 mile = 5,280 feet, then his speed is,

\rm  Speed = \dfrac{50}{97}  \ miles \ per \ minute\\\\  Speed = \dfrac{50}{97}  \times 5280 \\\\ Speed= \dfrac{26,400}{97}\ feet \ per \ minute\\

And 1 minute = 60 seconds, then his speed is,

\rm  Speed= \dfrac{26,400}{97}\ feet \ per \ minute\\\\ Speed= \dfrac{26,400}{97} \times \dfrac{1}{60} \\\\ Speed = \dfrac{4400}{97} \ feet \ per \ second \\\\ Speed = 45.36 \ feet \ per \ second

Hence, The most accurate determination for the number of 45.36 feet per second Tyrone traveled on his way to work.

For more details about Equation refer to the link given below.

brainly.com/question/971941

6 0
3 years ago
Simplify the expression:<br> –7c8·(–0.4c3)2
MArishka [77]

Answer:

A simplified version of “<u>–7c8·(–0.4c3)2</u>,” would be,

“<u><em>–7c8·(–0.4c3)²= (-7c8)(-0.4)²(c)^6</em></u>”

If it helped please mark as brainliest, thanks. :)

4 0
3 years ago
Just say the answer pls and ty
Nonamiya [84]

Answer:

the answer pls and ty

7 0
3 years ago
Ryan runs 8 miles in 65 minutes. How many minutes does he take per mile
Stels [109]
65/8=8.125 minutes per mile
4 0
4 years ago
Read 2 more answers
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