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Degger [83]
3 years ago
6

A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population. She randomly assigns no

ld = 8 to the old diet and nnew = 5 to a new diet including the additive. The cows are housed in 13 widely separated pens. After two weeks, she milks each cow and records the milk produced in pounds:
Old Diet: 43, 51, 44, 47, 38, 46, 40, 35
New Diet: 47, 75, 85, 100, 58
Let μnew and μold be the population mean milk productions for the new and old diets, respectively. She wishes to test
H0: μnew - μold = 0
Vs
HA: μnew - μold /= 0,
using α = 0.05.
(a) Graph the data as you see fit. Why did you choose the graph(s) that you did and what does it (do they) tell you?
(b) Choose a test appropriate for the hypotheses and justify your choice based on your answer to part (a). Then perform the test by computing a p-value, and making a reject or not reject decision. Do this without R and show your work. (Also do it with R, if you wish, to check your work). Finally, state your conclusion in the context of the problem.
Mathematics
1 answer:
Darina [25.2K]3 years ago
7 0

Answer:

is that hindi or something.

Step-by-step explanation:

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Harlamova29_29 [7]
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The symphonic choir and the jazz choir are recording songs for an album. The album can be no more than 72 minutes long. The jazz
zimovet [89]

Answer:

The symphonic choir can record a maximum of 14 songs.

Step-by-step explanation:

We know that the album cannot be more than 72 minutes long, and the jazz choir records a total of 7 (3min) = 21  song minutes.

If we call c the number of songs the symphonic choir records , and each song is 3.5 minute long, then the song minutes for the symphonic choir are 3.5c; therefore, we have the inequality

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We solve this inequality by subtracting 21 from both sides and then dividing by 3.5:

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$c\leq \frac{51}{3.5} $

c\leq 14.47

The maximum integer value c can take is 14; therefore, the maximum number of songs the symphonic choir can record is 14 songs.

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