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astraxan [27]
3 years ago
6

Janine has two important tests to study for. If she plans to divide her study time equally between both tests, how long should s

he spend studying for each test if she wants to study for at most 90 minutes?
Mathematics
2 answers:
Radda [10]3 years ago
6 0
90 mins divide by 2 tests = 45 mins per test
docker41 [41]3 years ago
3 0
90/2 = 45
45 minutes each.

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1 5/8 = 13/8
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3 years ago
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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
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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

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d) Test statistic= -3.1233

(because of unequal variances we use that method)

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

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3 0
3 years ago
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SpyIntel [72]
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6 0
3 years ago
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Since y is directly proportional to x,

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When x = 15, y = 12.

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The answer is y = 1.6 when x = 2.

7 0
3 years ago
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How many solutions does the equation have?
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6 - a = 1/3(9a - 18)
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a = 3..........one solution
8 0
3 years ago
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