Answer:
c. There is insufficient evidence to conclude that there is a significant difference between the means of the statistics day students and night students on Exam 2
Step-by-step explanation:
Given that a statistics instructor believes that there is no significant difference between the mean class scores of statistics day students on Exam 2 and statistics night students on Exam 2.
Group Group One Group Two
Mean 75.8600 75.4100
SD 16.9100 19.7300
SEM 2.8583 3.2436
N 35 37
*SEM is std error/sqrt n
Mean difference = 0.4500
(two tailed test)
Std error for difference = 4.342
Test statistic t =
df =70
p value = 0.9178
Since p >0.05 we accept H0
c. There is insufficient evidence to conclude that there is a significant difference between the means of the statistics day students and night students on Exam 2
Answer:
Time = 149.688 seconds
Step-by-step explanation:
First the conversation rate of ft to miles is
1 foot = 0.000189 mile
So 3300 feet = 3300*0.000189
= 0.6237
3300 feet = 0.6237 mile
So the roller coaster traveled 0.6237 mile.
But the speed of the roller coaster is 15 mile/hour
To calculate for time
Speed = distance/time
Time = distance/speed
Time = 0.6237/15
Time = 0.04158 hour
Converting to seconds , we multiply time by 3600
Time in seconds = 0.04158*3600
Time = 149.688 seconds
Thank you
Answer:
1/9
Step-by-step explanation:
when you have a negative exponent, you move the term to the denominator: 1/3^2
then you just do 3^2: 1/9