Answer:
E. -0.723
Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.
Step-by-step explanation:
Information provided
represent the sample mean for the length
represent the sample standard deviation
sample size
represent the value that we want to test
represent the significance level
t would represent the statistic
represent the p value for the test
System of hypothesis
We need to conduct a hypothesis in order to check if the lathe is in perfect adjustment (6cm), then the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
since we don't know the population deviation the statistic is:
(1)
Replacing in formula (1) we got:
E. -0.723
P value
The degrees of freedom are given by:
Since is a two tailed test the p value would be:
Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.
Answer:
see explanation
Step-by-step explanation:
Multiplying or dividing each part of the ratio gives an equivalent ratio
Given
8 : 20 ← divide both parts by 2
= 4 : 10 ← divide both parts by 2
= 2 : 5 ← ratio in simplest form
Multiply both parts by 2
8 : 20 = 16 : 40
4 : 10, 2 : 5, 16: 40 ← are possible equivalent ratios
2x5.4x4.5x4.2x5.3x3. 5.5x3
Answer:
C)$1,117.61
Step-by-step explanation:
The balance on the credit card is $1187.92 with interest of 12.25%.
r = 12.25% = 12.25/100 = 0.1225
A late fee = $30
Amount = P(1 + r/12)^1 + late fee
Now plug in the given values in to the formula, we get
1187.92 (1 + 0.1225/12) + 30
= 1200.05 + 30
= $1230.05
During the next due date, you pay $125, so the new balance
1230.05 (1 + 0.1225/12) - 125
= $1117.61
Thank you.
The answer is 9 because 2y=16, and 16 -7 is 9. I hope this helps!
