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lord [1]
3 years ago
13

Spencer rolled a number cube 50 times and recorded the results in this table. Outcome Number 1 8 2 10 3 7 4 7 5 9 6 9 What is th

e theoretical probability of the cube landing on a 2? What is the experimental probability of the cube landing on a 2? A. Theoretical - 20% Experimental - 16.7% B. Theoretical - 16.7% Experimental - 20% C. Theoretical - 16.7% Experimental - 16.7% D. Theoretical - 10% Experimental - 20%
Mathematics
1 answer:
hram777 [196]3 years ago
5 0
-10% because there is only one 2 in the 10 numbers. hope this helps
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Convert the rate of 24 in/sec to an equivalent rate measured in ft/sec
motikmotik
2 feet in a second 12 inches in a foot
6 0
3 years ago
Steve wants to know what the average ACT scores of students graduated from his high school is. He randomly selected 25 students
beks73 [17]

Answer:

[a]. sample is 25 randomly selected students

    also population is all students

[b]. (20.0, 23.0)

[c]. (8.8, 24.2)

Step-by-step explanation:

here is a step by step process to solving this, i hope you find this helpful.

1). The population is all students who graduated from his school  while the

sample is 25 randomly selected students from the email list

2). given alpha = 1-0.86=0.14

critical z value(two tailed) for 86% confidence level is:

z=normsinv(0.07) or normsinv(0.93)=1.476

Margin of error=1.476*(4.6/SQRT(20))=1.5

86% confidence interval for population mean

=21.5+/-1.5

=(20.0, 23.0)

3). if population standard deviation is not known,we will use t distribution.

df=20-1=19

t*=tinv(0.05,19)=2.093

Margin of error=2.093*(5.7/sqrt(20))=2.7

95% confidence interval for population mean

=21.5+/-2.7

=(18.8, 24.2)

cheers i hope this helps!!!!

3 0
3 years ago
An archaeologist is categorizing the artifacts he has discovered. Two-thirds of the artifacts are shards of pottery. One-eighth
Reika [66]

Answer:

Personal items=15

Step-by-step explanation:

We are given:

Total number of artifacts = 72.

We are told that 2/3 of total artifacts are shards of pottery.

\text{Shards of pottery}=72*\frac{2}{3} =24*2=48

We are also told that 1/8 of total artifacts are tools.

\text{Tools}=72*\frac{1}{8}=9

Now we will find out number of personal items by subtracting combined number of shards of pottery and tools from total number of artifacts.

\text{ Personal items}=72-(48+9)

\text{ Personal items}=72-57=15

Therefore, there are 15 personal items.

8 0
4 years ago
Marissa has a wool rug that has the shape of a regular octagon in her living room. The diameter of the incircle of the rug measu
alexira [117]
We know that the diameter of the inner circle (d) and the side of a regular octagon (s) are tied by the formula:

d = (1 +√2) × s

The inverse formula is:

s = d / <span>(1 +√2)

Plugging in numbers:
s = 7 (1 + </span>√2)
   = 2.9 ft

Therefore the correct answer is A) <span>2.9 feet</span>
7 0
3 years ago
Read 2 more answers
May I please receive help?
zubka84 [21]

Answer:

81+71+x=180

152+x=180

x=180-152

x=28°

Step-by-step explanation:

Hope that this is helpful.

Have a great Day.

8 0
3 years ago
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