4 years ago

2 Points

Mathematics

1 answer:

Lerok [7]4 years ago

4 0

C draw a line thought points dand fand another

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dmitriy555 [2]

You would have 30 coins, 6 dimes, 4 nickels, and 20 pennies.

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4 years ago

15 - G = 23 - 2G Please help me answer this

Vadim26 [7]

Answer:

-G + 15 = - 2G + 23

- 15 -15

-G = -2G + 8

+2G +2G

S0, G = 8 is the answer

Step-by-step explanation:

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3 years ago

for an interview 60% of the applicants were selected. After the interview 20% for those who were selected go to the job offer

Y_Kistochka [10]

Answer:

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3 years ago

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Alinara [238K]

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Step-by-step explanation:

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3 years ago

A researchers wants to determine the mean weight of avocados grown in Southern California. The population from which the sample

natka813 [3]

Answer: (0.465, 5.535)

Step-by-step explanation:

Formula to calculate the confidence interval (when population standard deviation is unknown) is given by :-

$\overline{x}\pm t_{\alpha/2} \dfrac{s}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

s= sample standard deviation.

n= Sample size.

$t_{\alpha/2}$ = critical value

By considering the given information , we have

$\overline{x}=6$

s=0.75

n= 9

Significance level = $\alpha=0.1$ [1-0.90=0.1]

By using students' t distribution -table , the critical value for 95% confidence level :

$t_{\alpha/2 , n-1}=t_{0.1/2,\ 8}=1.86$

[Note: degree of freedom = n-1]

Now, the 90% confidence interval for the true mean weight of these Southern California avocados will be :

$6\pm (1.86) \dfrac{0.75}{\sqrt{9}}$

$6\pm (1.86) \dfrac{0.75}{3}$

$6\pm (1.86) 0.25$

$6\pm 0.465=(6-0.465,\ 6+0.465)=(0.465,\ 5.535)$

Hence, the required confidence interval =(0.465, 5.535)

4 0

3 years ago