Ask question

Ask question

All categories

4 years ago

13

BRAINLIEST!!!!!

2 answers:

STatiana [176]4 years ago

6 0

Answer:

It would not be a random fair sample, as the sample categories each should be 30 minimum for such sample tests to be effective. There are 20 cities so the maximum any category group can be sampled is 3 per city and 2 from other cities as 50/2 = 25 = 2.5 each. Therefore by having data from other cities this creates 20 other categories as the samples are based on geographic wider scale such survey would require 30 from each city to show effectiveness and it would require reliable data of 30 from from each city instead of 2-3 each city.

Step-by-step explanation:

ikadub [295]4 years ago

3 0

Answer: no because it’s only 50 and you decided the number and the you decided the number of cities so it’s not random

Step-by-step explanation:

You might be interested in

Compute the permutations and combinations. How many three-digit numbers greater than 200 can be formed from the digits 1, 2, 6,

Llana [10]

for the number to be greater than 200 it should start with 2,6,7 or 9

the answer is B) 100

4 0

3 years ago

Read 2 more answers

So is the correct answer A, B, C, or D

yuradex [85]

Answer:

What do you mean I need a picture or text please to understand what you are talking about so i can help you

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Dr. Silvers gas tank holds up to 16 7/8 gallons of gas it took 11.55 gallons of gas to fill her tank how many gallons of gas doe

otez555 [7]

Answer:

2.45 gallons

Step-by-step explanation:

1. Translate $16\frac{7}{8}$ into a whole number or decimal number: 14.

2. We know that Dr. Silvers filled her tank with 11.55 gallons of gas, so subtract 11.55 from 14.

$14 - 11.55 = 2.45$

3. There were 2.45 gallons of gas in Dr. Silvers gas tank before she filled it up.

4 0

3 years ago

Keisha‘s restaurant bill is $27 she wants to leave 15% tip how much money does Keisha need in all?

Sloan [31]

Answer:

$31.05

Step-by-step explanation:

7 0

3 years ago

Derive a formula for cos(2????) in terms of sin(????) and cos(????) for all real numbers u

azamat

Answer: (2α) = cos²(α) - sin²(α)

Step-by-step explanation:

The expression for cosine of the sum of two angles is:

cos (α + β) = cos(α)*cos(β) - sin(α)*sin(β)

in case α = β

cos ( α + α ) = cos (2α) = cos(α)*cos(α) - sin(α)*cos(α)

Hence cos (2α) = cos²(α) - sin²(α)

7 0

3 years ago