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ankoles [38]
3 years ago
7

In a given amount of time, Mary drove twice as far as Lynn. Altogether they drove 60 miles. How far did Mary

Mathematics
1 answer:
klemol [59]3 years ago
8 0

Answer:

40 its c

Step-by-step explanation:

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A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as
mina [271]

Answer:

Step-by-step explanation:

Given that a dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly assigns nold = 8 to get the old diet, and nnew = 5 to get the new diet including the additive.

From the data given we get the following

           N       Mean      StDev     SE Mean

Sample   1    8           43       5.1824 1.832

Sample   2   5           73     21.0832 9.429

df = 11

Std dev for difference = 13.3689

a) Yes the two are independent.  The two sets of cows randomly chosen are definitely independent. Paired means equal number should be there and homogeneous conditions should be maintained.

b) Enclosed

c) Comparison of two means is the test recommended here.  Because independent samples are used.\

d) Test statistic= -3.1233

(because of unequal variances we use that method)

95% confidence interval =  ( -56.6676 , -3.3324 )

p value <0.05 our alpha

So reject null hypothesis.

The two means are statistically significantly different.

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3 years ago
What is the slope of the line graphed below?
Zielflug [23.3K]

Answer:

a

Step-by-step explanation:

y2-y1 / x2-x1

1-2 / 3-(-2)

1-2 / 3+2

-1 / 5

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How to find the volume of a rectangular prism
mr_godi [17]
Length times width times height
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6000 increased by 145%
Lisa [10]
Your question would be clearer if written as "What is 145% of 6000?"

1.45(6000) = 8700
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I'm leaving this app.
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Okey, bye

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