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Ne4ueva [31]
3 years ago
15

Select all that apply. A card is randomly drawn from a deck of cards. (There are 52 cards in a deck, with 13 cards of each suit.

) You record the following results for the experiment. Hearts Clubs Spades Diamonds Times Drawn 28 32 18 22 Which of the following are true? The experimental probability of drawing a club is 32%. The theoretical probability of drawing a diamond is 25%. Based on the experimental probability, there would be 90 spades drawn in 500 trials. Based on the theoretical probability, there would be 120 hearts drawn in 500 trials.
Mathematics
1 answer:
gayaneshka [121]3 years ago
8 0
True: The theoretical  probability of drawing a diamond is 25%. Since there are the same number of cards for each of the four suits, the chance of drawing any suit is 25%.

True: Based on the experimental probability, there would be 90 spades drawn in 500 trials. 0.18 x 500 = 90

The rest of the statements are false.
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g Nationwide, a certain disease occurs only a small proportion of people (.000215). A certain town has 74,000 residents. Use the
Andrei [34K]

Answer:

The probability that the town has 30 or fewer residents with the illness = 0.00052.

Step-by-step explanation:

So, we have the following set of data or information or parameters given from the question above and they are; the number of people living in that particular society/community/town = 74,000 residents and the proportion of people that the diseases affected = .000215.

The first step to do is to determine the expected number of people with disease. Thus, the expected number of people with disease = 74,000 × .000215 = 15.91.

Hence, the probability that the town has 30 or fewer residents with the illness = 1.23 × 10^-7 × 15.91^30/ 2.65253 × 10^-32 = 0.00052.

Note the formula used in the calculating the probability that the town has 30 or fewer residents with the illness =  e^-λ × λ^x/ x!

8 0
3 years ago
HELPPPPPPPP PLSSSS I HAVE 30 BEFORE THIS IS DUE
postnew [5]

Answer:

The line equation in slope-intercept form is:

y\:=-\frac{2}{5}x+4

Hence, option D is true.

Step-by-step explanation:

Given the points

  • (0, 4)
  • (5, 2)

Finding the slope between the points

\left(x_1,\:y_1\right)=\left(0,\:4\right),\:\left(x_2,\:y_2\right)=\left(5,\:2\right)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

m=\frac{2-4}{5-0}

m=-\frac{2}{5}

As the y-intercept is obtained by setting the value x = 0.

As we know that when x = 0, the vale of y-intercept y = 4

so the y-intercept is b = 4.

As the slope-intercept form is

substituting the slope m = -2/5 and the y-intercept b=4

y  = mx+b

y\:=-\frac{2}{5}x+4

Therefore, the line equation in slope-intercept form is:

y\:=-\frac{2}{5}x+4

Hence, option D is true.

6 0
3 years ago
50 1/2 divided by 1/4 = 202<br> How are the numbers related?
Stels [109]

Answer:

see the explanation

Step-by-step explanation:

Let

x=50\frac{1}{2}=\frac{50*2+1}{2}=\frac{101}{2}

y=\frac{1}{4}

Find the ratio x/y

\frac{x}{y}=\frac{(101/2)}{(1/4)} =\frac{101*4}{2*1}=202

therefore

\frac{x}{y}=202

x=202y

That means----> The first number (50 1/2) is 202 times greater than the second number (1/4)

3 0
3 years ago
Read 2 more answers
I need to know the answers
e-lub [12.9K]
Is that your test or homework
6 0
3 years ago
Quick please!
Soloha48 [4]

Answer:

3(4j + 7 + 2j)

12j + 21 + 6j

12j + 6j + 21

18j + 21 ----- (1)

3(6j +7)

18j + 21 --------(2)

eq 1 = eq. 2

both are equal

5 0
2 years ago
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