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2 years ago

11

rolando bought a new phone. The dimensions of the new phone varied directly with the dimensions of his old phone.If the new phon

e measured 10 centimeters by 6 centimeters,by 2 centimeters ,which dimensions below might be the original phone

1 answer:

Tems11 [23]2 years ago

8 0

Answer:

Step-by-step explanation:new phone bigger

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A small lawnmower company produced 1,500 lawnmowers in 2008. In an effort to determine how maintenance-free these units were, th

ikadub [295]

Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the average using the finite correction factor is:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}$

The information provided is:

$N=1500\\n=183\\\sigma=1.47\\\bar x=3.3$

The critical value of <em>z</em> for 95% confidence level is,

<em>z</em> = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}$

$=3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)$

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

7 0

2 years ago

Please help! Identify the recursive formula for the sequence 20, 28, 36, 44, . . . .

r-ruslan [8.4K]

Option A

Answered by GauthMath if you like please click thanks and comment thanks

8 0

2 years ago

Solve y=15(9860)+6997 step by step please!! I'm Stupid :(

puteri [66]

I would probably distribute 15 with the parentheses 15x 9860 which is 147,900 then you would add 6997+147,900
Y= 154187

3 0

3 years ago

Read 2 more answers

80,420,100 in wod form

AnnyKZ [126]

Eighty million four hundred twenty thousand one hundred.

6 0

2 years ago

Which one is it please help tank you!

Len [333]

Answer:

3.6 × 10^4

Step-by-step explanation:

its the first one, the dark blue one

6 0

2 years ago