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BigorU [14]
3 years ago
11

Jamar divided 256 by 4 and got the answer of 64. Which problem could he use to check his answer?

Mathematics
1 answer:
alina1380 [7]3 years ago
8 0

Answer:

64 times 4.

Step-by-step explanation:

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The information systems department of your firm has developed a new database program to store critical information on point of s
artcher [175]

Step-by-step explanation:

x'=53

σ=16

n=144

a) hypothesis

H0:µ=55

Ha:µ<55

This is a left tailed test

b) Test statistics

  • z=(x'-u)/(sigma/sqrt {n})

=(53-55)/(16/sqrt{144})

=-1.5

c)Pvalue at z=|-1.5|

pvalue= p(z>1.5)

=1-0.933193

=0.066807

=0.0668

<u>Decision</u>

since pvalue>alpha(0.05) fail to reject the null hypotheis.

<u>Conclusion</u>

There is not sufficient evidence to support the claim the new computer program has not reduce the time to retrieve the data.

d)since Pvalue>alpha(0.025),so fail to reject the null hypothesis.

No, change in conclusion.  

4 0
3 years ago
I need help with this and I don’t understand it
DochEvi [55]

Lets break it down:

The bottom right picture shows an approximation of what 1 wingspan length is, and the goal is to <u>estimate </u>lengths.

A. 1 wing is approx. 7 meters. To find the wingspan of the plane just do 7 meters multiplied by 2 = 14 meters (approx wingspan). Now we convert (remember, to the nearest foot!)

14 meters = 45.93 ft

Round it to the nearest foot = 46 ft is your approx. wingspan.

B. The height. This is one is a little tricky! Lets try to use what we know:

1 wing is approx. 7 meters. Since these are approximations, lets say half of one wing is <u>roughly</u> the size of the height of the plane. Since these are approximations I'd say 4 meters.

4 meters = 13 ft (rounded).

<em>I checked online for the specs of the Lysander and the exact height is 14 ft 6 in and wingspan is 50 ft. </em>This means our approximations were correct!

C. The length would be 10 ft + 7 meters

10 ft = 3 meters (rounded)

3 meters + 7 meters = 10 meters

<em>(converting to meters then to ft at the end because it's less messy)</em>

10 meters = 33 ft (rouned)

length of the Lysander is approx. 33 ft!

(the real length is 30 ft 6 in)

This means our approximations were correct once more.

Hopefully this helped you and made your night/day easier.



5 0
4 years ago
A car travels 1/6 of the distance between two cities in 3/5 of an hour. At this rate, what fraction of the distance between the
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5 0
3 years ago
What Are the factors of 24 and 32
Liula [17]

Answer:

The factors of 24 are 24, 12, 8, 6, 4, 3, 2, 1

The factors of 32 are 32, 16, 8, 4, 2, 1.

Step-by-step explanation:

8 0
3 years ago
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Greatest Common Factor of 30 and 100
Black_prince [1.1K]

Answer:

10

Step-by-step explanation:

30 - 1, 2, 3, 5, 10, 15, 30

100- 1, 2, 4, 5, 10, 20, 25

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3 years ago
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