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vagabundo [1.1K]
3 years ago
14

A market research firm conducts telephone surveys with a 44% historical response rate. what is the probability that in a new sam

ple of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? in other words, what is the probability that the sample proportion will be at least 150/400 = .375? calculate the probability to 4 decimals.
Mathematics
1 answer:
Gala2k [10]3 years ago
8 0

<span>
EXAMPLE: A common source of frame error is the use of a telephone directory as a sampling frame for a telephone survey. Many houses are not liste</span>
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Triangle PQR and STR are shown. Which of the following does Not justify PQR ~STR ?​
hjlf

The equation that does not justify the similarities of both triangles is:

\frac{RQ}{RT}= \frac{PQ}{ST}

<h3>Similar triangles</h3>

Similar triangles may or may not have congruent sides.

The triangles are given as:

  • Triangle PQR
  • Triangle STR

The above means that, the following sides are similar

  • Line segments PQ and ST
  • Line segments QR and TR
  • Line segments PR and SR

So, the equation that does not justify the similarities of both triangles is:

\frac{RQ}{RT}= \frac{PQ}{ST}

Read more about similar triangles at:

brainly.com/question/14285697

4 0
2 years ago
What percent of 350 is 252
7nadin3 [17]
To solve this you can make a perportion

252     x 
----- = -----
350     100

and solve 252 times 100/350=72

252 is 72% of 350
5 0
4 years ago
Kylie has lemon and watermelon in a ratio of 10:71. How many watermelon does she have if she has 20 lemons
kkurt [141]

Answer:

She will have 142 watermelons

Step-by-step explanation:

First let's put our ratio

10 : 71

Since our lemons are now 20 instead of 10 we will divide 20 by 10 to see how many time we multiplied it by.

20 \div 10

which equals 2

To find our water melon we will multiply it by 2

71 \times 2

which equals 142

She will have 142 watermelons

7 0
3 years ago
I NEED HELP ! ill mark brainlist
Naya [18.7K]

Answer:(x + 3)(x + 3)

Step-by-step explanation:

8 0
3 years ago
How does the concept of inequality help you describe situations?
kati45 [8]
Try using the back of the book.
3 0
3 years ago
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