Answer:
The least common multiple of 20 and 25 is 100.
Answer:
Read my comments you can use this app for any math question and gives you an answer
Answer:
5
Step-by-step explanation:
5
Answer:
Step-by-step explanation:
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
In order to find the critical value we need to take in count that we are finding the critical value for the population mean and without the standard deviation, so on this case we need to use the t distribution. Since our interval is at 95% of confidence, our significance level would be given by and . We need to calculate the degrees of freedom are given by:
We can find the critical value using the following excel codes:
"=T.INV(0.025;38)" or "T.INV(1-0.025;38)"
And the critical values would be given by:
Answer: h(t) = 20 + 32t - 16t²
Explanation:
The function that models the motion of an object thrown in the air (vertically) is:
h(t) = H + Vo × t - (1/2) g×t²
Where:
H is the initial height = 20 feet
Vo is the inital velocity = 32 ft/s (positive if it is upward)
g is gravity acceleration ≈ 32 ft/s²
t is the time
Substitute values:
h(t) = 20 + 32t - 32t² / 2
h(t) = 20 + 32t - 16t²
That is the answer.