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Ronch [10]
3 years ago
11

A researcher is testing a hypothesis of a single mean. The critical z value for a = .05 and a two‑tailed test is +1.96. The obse

rved z value from sample data is ‑2.05. The decision made by the researcher based on this information is to _____ the null hypothesis.
Mathematics
1 answer:
grandymaker [24]3 years ago
4 0

Answer:

The decision made by the researcher based on this information is to reject the null hypothesis.

Step-by-step explanation:

Two-tailed hypothesis test:

Critical value: z_c

Test statistic: z

If |z| < |z_c|, we do not reject the null hypothesis.

If |z| > |z_c|, we reject the null hypothesis.

In this question:

z_c = 1.96, z = -2.05, |z| = 2.05

Since |z| > |z_c|, we reject the null hypothesis.

The decision made by the researcher based on this information is to reject the null hypothesis.

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Answer:

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A spheres radius is multiplied by 2. How is it’s surface area affected
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Answer:

The surface area is multiplied by 3.

Step-by-step explanation:

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3 years ago
Justice hopes to build a fence around his garden he measures and determined that he needs 24 feet of fencing when he arrives at
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Answer:

It  will cost  $72 Justice to fence in his garden.

Step-by-step explanation:

Total length of the fencing around the garden =  24 feet

Cost of fencing per inch = $0.25

Now, as we know 1 foot  =  12 inches

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Hence, the total length of  fencing   =  288 inches.

Now, Total cost of Fencing

=Total length of fencing x Cost of fencing par inch

=  288 inches x ($0.25)

=  $ 72

or, the total cost of fencing = $72

Hence, it  will cost  $72 Justice to fence in his garden.

7 0
2 years ago
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4 0
3 years ago
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SAM now has 30ml of pop to share equally into glasses.
crimeas [40]
So whole ml's


30 mls
find what 30 is evenly divisble by
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therefor
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so he can divide the glass into 2 sevings which is 30/2=15 ml in each

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2              15            15/30=1/2
3              10              10/30=1/3
5                6             6/30=1/5
6              5                5/30=1/6
10               3              3/30=1/10
15              2              2/30=1/15
7 0
3 years ago
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