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netineya [11]
3 years ago
11

In a survey conducted by a polling​ company, 1100 adult americans were asked how many hours they worked in the previous week. ba

sed on the​ results, a​ 95% confidence interval for the mean number of hours worked had a lower bound of 42.7 and an upper bound of 44.5. provide two recommendations for decreasing the margin of error of the interval. select all that apply.
a. decrease the sample size.
b. use fewer degrees of freedom.
c. decrease the confidence level.
d. decrease the standard deviation of hours worked.
e. increase the confidence level. f. increase the sample size
Mathematics
1 answer:
Nina [5.8K]3 years ago
5 0
Let me deem them cheeks clap hun
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Answer:

log(x^7·y^2)

Step-by-step explanation:

The applicable rules are ...

... log(a^b) = b·log(a)

... log(ab) = log(a) +log(b)

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The first term, 7log(x) can be rewritten as log(x^7). Note that an exponentiation operator is needed when this is written as text.

The second term 2log(y) can be rewritten as log(y^2). These two rewrites make use of the first rule above.

Now, you have the sum ...

... log(x^7) +log(y^2)

The second rule tells you this can be rewritten as ...

... log(x^7·y^2) . . . . . seems to match the intent of the 3rd selection

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3 years ago
PLS SOMEONE HELP PLSSS
Sav [38]

Answer:

x=17

Step-by-step explanation:

ok so since lines PR and RQ are congruent (we know because of the lines on them), that means angles P and Q are also equal.

now we can set up the equation to find x like this:

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Integrate [0, 1/2] xcos(pi*x).
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To answer your question, this could be the possible answer and i hope you understand and interpret it correctly:
<span>[Integrate [0, 1/2] xcos(pi*x
let u=x so that du=dx
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uv-itgral[0,1/2]vdu just plug ins
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(1/pi)x sinpi*x - (1/pi)[-(1/pi) cos pi*x] from 0 to 1/2
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3 years ago
HELP FIRST GET BRAINLLEST Which of the statements below are true? Select all that apply. A) Joan's friends did better on the tes
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Answer:

B and C

Step-by-step explanation:

To figure out the average of all of the scores, you add all of the numbers together and then divide by how many numbers there are. The average shows about how well they did. Anne's friends average was 90 and was higher than Joan's friends average which was 75. Then the lowest score was definitely 78. So the answer would be B and C.

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