Answer:
B.
Step-by-step explanation:
First GH =1
Scale factor of 0.5 is applied
GH=1×0.5
GH=0.5
Answer:<1=126° <2=54°
Step-by-step explanation:
sum of angles in a =180°
<2+90+36=180
<2+126=180
Collect like terms
<2=180-126
<2=54°
<2 and <1 are supplementary angles therefore their sum is equal to 180
<2 + <1=180
54 + <1=180
Collect like terms
<1=180-54
<1=126
-distribution sill get taller and SD will decrease
-distribution will get shorter and SD will decrease
Distribution will get shorter and SD will increase
Answer:
Distribution will get taller and SD will decrease.
Step-by-step explanation:
Sample Size and Standard Deviation:
In a t-distribution, sample size and standard deviation are inversely related.
A larger sample size results in decreased standard deviation and a smaller sample size will result in increased standard deviation.
Sample Size and Shape of t-distribution:
As we increase the sample size, the corresponding degree of freedom increases which causes the t-distribution to like normal distribution. With a considerably larger sample size, the t-distribution and normal distribution are almost identical.
Degree of freedom = n - 1
Where n is the sample size.
The shape of the t-distribution becomes more taller and less spread out as the sample size is increased
Refer to the attached graphs, where the shape of a t-distribution is shown with respect to degrees of freedom and also t-distribution is compared with normal distribution.
We can clearly notice that as the degree of freedom increases, the shape of the t-distribution becomes taller and narrower which means more data at the center rather than at the tails.
Also notice that as the degree of freedom increases, the shape of the t-distribution approaches normal distribution.
In a t-distribution, as the sample size increases, the distribution becomes 'shorter', and the standard deviation decreases following the law of large numbers. The increased sample size reduces variability and introduces less deviation from the mean.
As the sample size increases for a t-distribution, the distribution tends to approach a normal distribution shape, which means the distribution will get 'shorter'. Additionally, the standard deviation (SD) would generally decrease as the sample size increases. This is due to the fact that when sample size increases, a smaller variability is introduced, hence less deviation from the mean.
To illustrate, imagine rolling a dice. If you roll it a few times, you may end up with quite a bit of variation. If you roll it a hundred times, however, the numbers should average out closer to the expected value (3.5 for a six-sided dice), and the standard deviation (a measure of variability) would decrease.
In conclusion, when the sample size increases, a t-distribution will get 'shorter' and SD will decrease. This concept is often referred as the law of large numbers.
#SPJ6
Percent Error
Item
Books
Approximate
value
75
Exact value
95
Ratio
Error
-20
Absolute error
20
Percent error
(100)
.
元
(100)
Percent error = |actual error - expected error/ expected error| * 100%
(|75-95|)/95 = 0.21
0.21 * 100% = 21% error
Answer:
m+2m-s
Step-by-step explanation:
Answer:
A: M + 2m - s
Step-by-step explanation:
If you miss 8 out of 67 questions on the exam, your grade percentage would be approximately 88.06%.
Given that there are 67 questions on an exam. If you miss 8 of these questions then Subtract the number of questions missed (8) from the total number of questions (67):
Number of questions answered correctly = Total questions - Questions missed
= 67 - 8
= 59
Now, Grade percentage = (Number of questions answered correctly / Total questions) * 100
= (59 / 67) * 100
≈ 88.06% (rounded to two decimal places)
Therefore, if you miss 8 out of 67 questions on the exam, your grade percentage would be approximately 88.06%.
Learn more about percent here:
#SPJ12
Grace's walking rate is 1.5 meters per second. Her house is 90 meters from the fountain. How many seconds will it take her to reach the fountain?
Answer: We know that Grace's walking rate is 1.5 meters per second
Number of meters Grace's house is from fountain is 90 meters.
Therefore, the time it will take Grace to reach the fountain is:
Therefore, it will take Grace 60 seconds to reach fountain
Speed=1.5
Distance=90 meters
Time=?
Distance= time × speed
Thus,
T=distance/speed
=90/1.5
= 60 second
= 1 minute