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nekit [7.7K]
2 years ago
8

I need a word question that is a negative divided by a positive.

Mathematics
2 answers:
Zarrin [17]2 years ago
6 0

Answer:

like this?

"What is negative eighty divided by five?"

Step-by-step explanation:

-80 ÷ 5

= -16

Solnce55 [7]2 years ago
6 0

Answer:

like this?

"what is the negative eighty devided by five?"

Step-by-step explanation:

-80÷5

= -16

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There are many ways to measure the reading ability of children. Research designed to improve reading performance is dependent on
ELEN [110]

Answer:

A 90% confidence interval to estimate the mean DRP score in Henrico County Schools  is =32±2.7280

i.e. C.I.  [29.3,34.7]

Hence the results are not significant.

Step-by-step explanation:

Given:

Total no of students =44

True mean =32

Standard deviation=11

And all 4 students score also given.

To Find:

90 % confidence interval and conclusion on it.

Solution:

Here for C.I. we required mean, standard deviation and no of students.

So mean =32,S.D.=11 and n=44

Therefore , For 90 % interval Zscore is Z=1.645

C.I.=mean±Z[Standard  deviation/Sqrt(n)]

=32±1.645[11/Sqrt(44)]

=32±1.645[1.6583]

=32±2.7280

i.e. C.I.  [29.3,34.7]

Now Here to commit on calculated interval we should check  value of Z-score

So we need to calculate the sample mean.

Sample mean =Sum of all values /Total no of values.

=[40+ 26 +39+ 14+ 42+ 18 +25+ 43+ 46 +27 +19+ 47+ 19 +26+ 35 +34+ 15+ 44 40+ 38+ 31+ 46 +52 +25+ 35 +35+ 33 +29 +34 +41 +49+ 28+ 42+ 47 +35 +48 +22 33+ 41 +51 +27 +14+ 54 +45]/44

=34.86

Z-score=(sample mean -true mean)/[standard deviation/Sqrt(n)]

=(34.86-32)/[11/Sqrt(44)]

Z=1.72465

For ,

P(Z≥1.72465)=0.08544

For 0.05 significance level  the results are not significant at  p<0.01.

Researcher claimed mean is not correct upto 0.05 significant level

i.e calculated mean and Sample mean are different.

Hence the results are not significant.

6 0
2 years ago
2d+7/6-d-5/3=0 Tell me the answer ​
Inessa [10]

Answer:

d=1/2

Step-by-step explanation:

2d +  \frac{7}{6}  - d -  \frac{5}{3}  = 0 \\ 2d - d =  \frac{5}{3}  -  \frac{7}{6}  \\ d =  \frac{10}{6}  -  \frac{7}{6}  \\ d =  \frac{3}{6}  \\ d =  \frac{1}{2}

3 0
2 years ago
El 2% que fraccion representa​
k0ka [10]
2/100 or 1/50 :p la respuesta
7 0
3 years ago
What is the Mean Absolute Deviation:
Neko [114]

128.309728

add all numbers together and divide by 50(there are 50 numbers)

find the difference of each number and 67.92(the mean)

add all these numbers together and divide by 50

3 0
3 years ago
jose bought 4 comic books and 2 nonfiction books. the 4 comic books cost him 8y dollars.if the cost of one nonfiction book is (3
professor190 [17]

write out the equation:

8y=3+7y  (I'm assuming y is the amount of comic books)
8=3+7
8=10

Obviously the equation isn't equal. The nonfiction is greater. By the way, I took out the y because I assumed that y was the amount of books and there was no need to write out 8 times one. On a test, make sure you specify this of the teacher may take off points, if she is using Common Core.

3 0
3 years ago
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