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miskamm [114]
3 years ago
5

If we buy 20 pickles what is the experimental probability of winning 5 or more tickets

Mathematics
1 answer:
Mrac [35]3 years ago
8 0

Answer:

Pr = 0.66

Step-by-step explanation:

Given

See attachment for complete question

Required

P(x \ge 5)

From the attachment, we have:

S = 2 + 8 + 4+20+21+19+17+5+2+2

S =100 ---- the sample size

Next, we list out all outcomes more than or equal to 5.

i.e.

x \ge 5

5 is represented with the vertical blue rectangle (with frequency 21).

So, the other elements are to the right of frequency 21.

So, we have:

x \ge 5 = 21+19+17+5+2+2

x \ge 5 = 66

The probability is then calculated as:

Pr = \frac{x \ge 5}{S}

This gives

Pr = \frac{66}{100}

Pr = 0.66

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18y4, 27y", and 63y?
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Answer:

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3 0
2 years ago
Read 2 more answers
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 47.3 m
Marta_Voda [28]

Answer:

\bar X = \frac{2276}{48}=47.417

If we compare this value with the 47.3 proposed we have the following error

Error = \frac{|Actual-real|}{real}*100 = \frac{|47.417-47.3|}{47.3}*100 =0.247\%

The computed mean is close to the actual mean because the difference between the means is less than 5%.  

Step-by-step explanation:

Assuming the following dataset:

Speed   42-45  46-49  50-53  54-57  58-61

Freq.         21        15        6           4          2

And we are interested in find the mean, since we have grouped data the formula for the mean is given by:

\bar X = \frac{\sum_{i=1}^n x_i f_i}{\sum_{i=1}^n f_i}

And is useful construct a table like this one:

Speed     Freq    Midpoint   Freq*Midpoint

42-45       21            43.5       913.5

46-49       15            47.5        712.5

50-53       6             51.5         309

54-57        4            55.5         222

58-61        2             59.5        119

Total       48                           2276

And the mean is given by:

\bar X = \frac{2276}{48}=47.417

If we compare this value with the 47.3 proposed we have the following error

Error = \frac{|Actual-real|}{real}*100 = \frac{|47.417-47.3|}{47.3}*100 =0.247\%

The computed mean is close to the actual mean because the difference between the means is less than 5%.  

6 0
3 years ago
The output of a function in 7 more than 3 times the input. find the input when the output is -8
kiruha [24]
7+ 3x= -8 
-8-7=-15
-15 divided by 3= -5
-5 is the answer
4 0
3 years ago
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