Answer:
Use a hypothesis test for difference of 2 means
We reject the null hypothesis
Step-by-step explanation:
We will use a hypothesis test for the difference of 2 means, where the population variances are unknown and not assumed equal. (The problem didn't tell us that the variances are equal, so we can't assume they are).
We first need to find the sample means and since we don't know the population variances, we need to find the sample variances as well.
See first attached photo for the calculations of these values...
See second attached photo for the hypothesis test...
Answer:-6x-9
Step-by-step explanation:
Multiply each of the numbers inside the parentheses by the coefficient.
<u>This number in </u><u>expanded </u><u>form </u><u>200 + 5 + 5/10 + 9/100</u><u> .</u>
What is expanded form in math example?
- It means that the expansion of numbers is based on the place value.
- The expanded form splits the number, and it represents the number in units, tens, hundreds and thousands form.
- For example, the expanded form of the number 1572 is 1000+500+70+2.
Given : 205.95 centimeters.
the number in a expanded form.
200 + 5 + 9/10 + 5/100
we have given 205.95 centimeters.
We can see 2 is at hundred place = 200.
0 is at tens place = 00.
5 is at ones place = 5.
9 after decimal is at tenth place = .
5 is at hundredth place = .
Therefore , Expanded form : 200 + 5 + 5/10 + 9/100 .
Learn more about expanded form in math
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The answer is A. in the special store you spend $3 on gas + 1.30 the price of the beans times the pounds you want
We know that
volume of a sphere=(4/3)*pi*r³
<span>diameter= 50 m--------------> r=D/2--------> r=25 m
Volume=</span>(4/3)*pi*25³------------> volume=65416.666 m³
the answer is 65416.67 m³