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aliina [53]
3 years ago
14

in a group of 40 student students, the probability that at most 15 of them like to hike? A 44% B 64% C 55% D 38%e to hike is 36%

. What is the probability that at least 16 of them like to hike
Mathematics
2 answers:
pshichka [43]3 years ago
7 0

Answer: 64%

Step-by-step explanation:

They are inverse, so they must add up to 1.

shepuryov [24]3 years ago
3 0

Answer:37.5% approximately 38%

Step-by-step explanation:

Probability formula= Number of possible outcome/ Total favorable outcome

Number of possible outcome=15

Number of total outcome =40

15/40×100=37.5 approx. 38%

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A person gets on and off a bathroom scale four times. The four readings (in pounds) are 148, 151, 150, and 152. Each time after
Ganezh [65]

Answer:

See explanation below

Step-by-step explanation:

Since each time after the person gets off the scale, the reading is 2 lb the person's weight must be near the mean of

148-2, 151-2, 150-2, 152-2; that is to say, near the mean of 146, 149, 148, 150 = (146+149+148+150)/4 = 148.25

We could estimate the uncertainty as <em>the standard error SE </em>

\bf SE=\frac{s}{\sqrt{n}}  

where  

<em>s = standard deviation of the sample </em>

<em>n = 4 sample size. </em>

Computing s:

\bf s=\sqrt{\frac{(146-148.25)^2+(149-148.25)^2+(148-148.25)^2+(150-148.25)^2}{4}}=1.479

So, the uncertainty is 1.479/2 = 0.736

<em>It is not possible to estimate the bias, since it is the difference between the true weight and the mean, but we do not know the true weight. </em>

5 0
3 years ago
Five people are sharing three-fifths of a pizza. What equal sized portion of the whole pizza will each five people receive? (Ple
bija089 [108]
1/5 of 3/5=1/5 times 3/5=3/25
each recieves 3/25 of the pizza
4 0
2 years ago
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The ratio of peas marbles to white marbles and serious bag is equal to 1:5 of the bag contains pink marbles
inessss [21]
WHAt does that actually mean?

6 0
3 years ago
During the month of February, Fabulous Feet Shoe Mart sold 30 pairs of red loafers. After an ad campaign to boost sales, they so
blagie [28]
20%

20% of 30 =6
30+6 = 36

6 0
3 years ago
Read 2 more answers
The answer to this question
Sophie [7]

The answer to this question is D) 13.9 in.

Try using the Pythagorean theorem when solving to get the hypotenuse or other angles for a right triangle.

4 0
2 years ago
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