Oven thermostats were tested by setting them to 350°F and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 348.2°F and the standard deviation was 5.1°F. a) Find a 90% confidence interval for the mean oven temperature.
b) Find a 95% confidence interval for the mean oven temperature.
c) What is the confidence level of the interval (347.5, 348.9)?
d) How many thermostats must be sampled so that a 90% confidence interval specifies the mean to within ±0.8°F?
e) How many thermostats must be sampled so that a 95% confidence interval specifies the mean to within ±0.8°F?

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.

answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation:

something over 10 so ? /10

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb