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Liula [17]
3 years ago
7

Itis true or false plz be fast​

Mathematics
1 answer:
VLD [36.1K]3 years ago
5 0
B And c I think I don’t understand the question you’re trying to ask
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University officials say that at least 70% of the voting student population supports a fee increase. If the 95% confidence inter
baherus [9]

Answer:

The interval estimate is above 70%, so infer that it will be supported.

Step-by-step explanation:

The evidence that 95% confidence interval estimating the proportion of students supporting the fee increase is [0.75, 0.85] supports university officials' claim that at least 70% of the voting student population supports a fee increase.

Therefore we can infer that a fee increase will be supported.

4 0
3 years ago
What expressions are equivalent to 5x + (x+6) + 3x
anyanavicka [17]

Answer:

9x + 6

Step-by-step explanation:

<u>Step 1:  Distribute</u>

5x + (x + 6) + 3x

5x + x + 6 + 3x

<u>Step 2:  Combine like terms</u>

5x + x + 6 + 3x

9x + 6

Answer: 9x + 6

8 0
3 years ago
I need a little help here, someone help?
garri49 [273]
She saved 68 of her earnings
3 0
3 years ago
The average starting salary for graduates at a university is $25,000 with a standard deviation of $4,000. if a histogram of the
kirill115 [55]
The empirical rule says 68% of the distribution should fall within one standard deviation of the mean, so you should expect salaries between \$25000-\$4000=\$21000 and \$25000+\$4000=\$29000
3 0
3 years ago
calls arrive at lynn ann fish's hotel switchboard at a rate of 2.0 per minute. the average time to handle each is 10 seconds. th
BartSMP [9]

The probability that the operator is busy is 33.33% if the call rate is 2 per minute and average time to handle is 10 seconds.

Given rate of calls 2 per minute and average time to handle a call is 10 seconds.

We have to find the probability that the operator is busy.

Probability is the chance of happening an event among all the events possible. The value of probability lies between 0 and 1.

Probability= number of items/ total items

If rate is 2 per minute then the customers handled in 1 hour=2*60=120

The average time to handle a call=10 seconds.

Therefore customers to be handled in 1 hour=360 (10*6*60)

Probability that the operator is busy is as under:

Probability=λ/μ

=120/360

=1/3

=1/3*100

=33.33%

Hence the probability that the operator is busy is 33.33%.

Learn more about probability at brainly.com/question/24756209

#SPJ4

4 0
2 years ago
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