Answer:
Hello your question has some missing information below is the missing information
Sample mean and Sample standard deviation
Bass 70.99 and 2.52
Tenor 69.41 and 2.79
answer : <em>We will reject H0 </em>
Step-by-step explanation:
<u>Determine whether the population mean height of bass singers > population mean height of tenor singers </u>
n1 = 64 , n2 = 42
x1 ( mean ) = 70.99
x2( mean ) = 69.41
S1 ( std 1 ) = 2.52
S2 ( std 2 ) = 2.79
We will perform a two tailed test hence we will state the null and alternate hypothesis
H0 : μ1 > μ2
H1 : μ1 < μ2
significance level = 0.01
next calculate the test statistic
t = 2.96
attached below is the remaining part of the detailed solution
Answer:
120
Step-by-step explanation:
So 10% <em>of</em> a number (let's use n) is 30.
The key word "of" tells us we need to multiply. Therefore, 10% times n is 30:
10% is the same as 0.1. So:
Divide both sides by 0.1:
So, our number is 300.
To find 40% of 300, multiply 0.4 and 300. Thus:
Our answer is 120.
And we're done!