Mean

You first look at the 10,000 places, in this number, the tens place is 90,000. Which is the 9. So you look at the thousands place and check of its 5 or more which means you have to change number or if its 4 or less than leave it. And the thousands place is 8,000 so the 9 has to become greater. So for my thinking, its 7,308,341. My best try

3 0

3 years ago

Can someone please help me with this (BTW ignore my writing)

Jobisdone [24]

ANSWER

On photo

EXPLANATION

Use the quadratic formula since the equation doesn't factorize not simplify by 3

5 0

2 years ago

The mean and standard deviation of a normal distribution are 150 and 12 respectively. What percentage of values lie between:

Semenov [28]

Answer:

Step-by-step explanation:

Use a calculator with built-in statistical functions. The function applying here is normcdf(, the "cumulative density function."

(a) The percentage of values lying between 138 and 162 is

norm(138,162, 150, 12), which comes out to 0.683, or 68.3%.

(b) Find norm(126, 174, 150,12): 0.945, or 94.5%

(c) Find norm(126,162, 150,12); 0.819, or 81.9%

(d) Find norm(162, 174,150,12): 0.136, or 13.6%

8 0

3 years ago

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