2 years ago

Find the exact value of sin165

Mathematics

1 answer:

Katarina [22]2 years ago

5 0

Hope I helped with your problem

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Randomly selected students participated in an experiment to test their ability to determine when one minute (or sixty seconds)

zalisa [80]

Answer: $(57.41,\ 62.19)$

Step-by-step explanation:

Given : Sample size : $n=40$

Sample mean : $\overline{x}=59.8\text{ seconds}$

Standard deviation : $\sigma =9.2\text{ seconds}$

Significance level : $\alpha=1-0.9=0.1$

Critical value : $z_{\alpha/2}=1.645$

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=59.8\pm(1.645)\dfrac{9.2}{\sqrt{40}}\\\\\approx59.8\pm2.39\\\\=(59.8-2.39,\ 59.8+2.39)\\\\=(57.41,\ 62.19)$

Hence, a 90% confidence interval estimate of the population mean of all students = $(57.41,\ 62.19)$

6 0

2 years ago

Someone HELP (sorry if the picture is poor quality)

adoni [48]

Not sure but i would go bottom left corner answer

4 0

2 years ago

What is the volume of the prism? ft³

sweet [91]

Can u show us a pic of the question

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3 years ago

Ok, now i need help from 1-5, 20 points

ratelena [41]

1 = 8

2=3+8

3=12

4=9

8 that's it bra

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3 years ago

If you have the equation, y=2x+10 what’s x if y=24

jolli1 [7]

Answer: x=7

24=2x+10

24-10=14

14=2x

14/2=7

6 0

3 years ago