3 years ago

PLEASE HELP WITH THIS I GOT 5 MIN LEFT GIVING ALL MY POINTS AND BRAINLIEST PLEASE COME!!!!!!!

1 answer:

3 0

What's the question?

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zlopas [31]

3 0

3 years ago

liberstina [14]

Answer: ($3.055, $3.205)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.95=0.5$

Critical value : $z_{\alpha/2}=1.96$

Sample size : n= 36

Sample mean : $\overline{x}=\$\ 3.13$

Standard deviation : $\sigma= \$\ 0.23$

The confidence interval for population mean is given by :_

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$\text{i.e. }\$\ 3.13\pm (1.96)\dfrac{0.23}{\sqrt{36}}\\\\\approx\$\ 3.13\pm0.075\\\\=(\$\ 3.13-0.075,\$\ 3.13+0.075)=(\$\ 3.055,\$\ 3.205)$

Hence, the 95% confidence interval to estimate the population mean = ($3.055, $3.205)

3 0

3 years ago

Sergio [31]

4m - 3 = 100
4m = 103
m = 25 3/4

Hope this helps!

5 0

3 years ago

Fantom [35]

Answer:

Subtract 9 from both sides of the equation.

5 0

2 years ago

posledela

Answer:

=10

Step-by-step explanation:

because 20÷10=2

70÷10=7

50÷10=5

7 0

3 years ago