Answer:
18 student gave there speech yesterday
36 students gave there speech today
Step-by-step explanation:
54 total
54 * 1/3 = 18 student gave there speech yesterday
54*2/3 = 36 students gave there speech today
Hope this helps!
(Please mark ask brainiest)
Thanks!
Answer:
Step-by-step explanation:
Hint- First we have to calculate the mean and standard deviation of the sample and then applying formula for confidence interval we can get the values.
Mean of the sample is,
Standard deviation of the sample is,
The confidence interval will be,
Here,
Z for 95% confidence interval is 1.96, and n is sample size which is 24.
Putting the values,
Confidence interval is used to express the degree of uncertainty associated with a sample.
95% confidence interval means that if we used the same sampling method to select different samples and calculate an interval, we would expect the true population parameter to fall within the interval for 95% of the time.
According with the table:
n=1→a1=24
n=2→a2=48
n=3→a3=72
n=4→a4=96
n=5→a5=120
With the first option we would get:
a1=24(1)+1=24+1→a1=25 different to 24. The equation does not work
With the second option we would get:
a1=24(1)→a1=24. The equation works
a2=24(2)→a2=48. The equation works
a3=24(3)→a3=72. The equation works
a4=24(4)→a4=96. The equation works
a5=24(5)→a5=120. The equation works
With the third option we would get:
a1=(1/24)(1)(1*1)/24→a1=1/24 different to 24. The equation does not work
With the fourth option we would get:
a1=1+24→a1=25 different to 24. The equation does not work
Answer: Second Option: an=24n
<h3>
Answer: 2.5%</h3>
=============================================================
Explanation:
Notice how 98-2*6 = 98-12 = 86. So we're 2 standard deviations below the mean.
Start at the center, which is where the highest point is located. The value 98 is at the center. Then move 2 spots to the left, which has us move 2 standard deviations lower than the mean, and we arrive at 86. Refer to the diagram below.
From here, we add up the percentages in that diagram that are below the 86 mark. Those percentages are the 0.15% and 2.35%
So we get (0.15%) + (2.35%) = 2.5% which is the answer
Side note: This diagram is using the Empirical Rule. Some textbooks call it the "68-95-99.7 rule", but that's more clunky of a name in my opinion. The three values 68, 95 and 99.7 refer to the approximate percentage values within 1, 2 and 3 standard deviations of the mean.
Answer:
area= 14
volume=96
Step-by-step explanation:
to find area add height+length+width
to find volume multiply height*lenght*width