Sixty-four independent measurements were made of the speed of light. They averaged 299,795 km/s and had a standard deviation of 8 km/s. True or false:

A 95% confidence interval for the speed of light is 299,795 plusminus 1.96 km/s.

The probability is 95% that the speed of light is in the interval 299,795 plusminus 1.96.

If a 65th measurement is made, the probability is 95% that it would fall in the interval 299,795 plusminus 1.96.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

42

step-by-step explanation:

i got 10.28 but that rounds up to 10.3

idk

step-by-step explanation: