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Furkat [3]
3 years ago
6

The musician played a song for everyone.

Mathematics
2 answers:
Allushta [10]3 years ago
8 0

Answer:

Ashlynn is here and ready to help!

________________________________

The musician played<u> a song</u> for everyone.

________________________________

<em>“Optimism is a happiness magnet. If you stay positive good things and good people will be drawn to you.” </em>

<em>-Mary Lou Retton</em>

________________________________

<em>Have a great day and be yourself no matter what!</em>

                                         <em>- Ashlynn</em>

JulijaS [17]3 years ago
5 0

Answer:

played i think

Step-by-step explanation:

or song

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An agronomist hopes that a new fertilizer she has developed will enable grape growers to increase the yield of each grapevine by
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Answer:

Yes. Fertilization increases grape yields by more than 5 pounds.

Step-by-step explanation:

Let f-fertilized and o-old(unfertilized)

#First, we use our data to calculate the standard error:

SE(\bar y_f-\bar y_o)=\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}\\\\=\sqrt{\frac{3.7^2}{44}+\frac{3.4^2}{47}}\\\\=0.7464

#State both null and alternative hypothesis:

H_o:\mu_f-\mu_o=0\\\\H_A=\mu_f-\mu_o>0

#We determine our degrees of freedom as 87.02(using R), we now compute the t-value as:

t=\frac{\bar y_f-\bar y_o}{\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}}\\\\\\t=\frac{53.4-52.1}{\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}}\\\\\\t=\frac{1.3}{0.7464}\\\\t=1.7417\\\\P=P(t_{87.0>1.7417}=1-0.9575=0.0.0425

Since, the p-value is low, we Reject the null hypothesis. The is enough evidence suggesting that grape yields increase by more than 5 pounds than mean yields of  unfertilized grapes.

8 0
4 years ago
Help I need this now.
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2.

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