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nalin [4]
3 years ago
14

Assume that random guesses are made for seven multiple choice questions on an SAT​ test, so that there are equals 7 ​trials, eac

h with probability of success​ (correct) given by pequals0.5. Find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is fewer than 4.
Mathematics
2 answers:
saul85 [17]3 years ago
5 0

Answer:

3 are fewer

Step-by-step explanation:

NeTakaya3 years ago
4 0

Answer: 0.5

Step-by-step explanation:

Formula for binomial probability :-

P(x)=^nC_xp^x(1-p)^{n-x}, where P(x) is the probability of getting success in x trials , n is the total number of trials and p is the probability of getting success in each trial.

Given : The number of trails : n=7

The probability of success​ for each trial : p=0.5

Now, the probability that the number x of correct answers is fewer than 4 will be :-

P(x

Hence, the probability that the number x of correct answers is fewer than 4 = 0.5

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20p to whoever helps! (OwO)
Anni [7]

Answer:

See below

Step-by-step explanation:

4 more than 3: 3 + 4 = 7

5 out of 9: 5/9

the sum of 6 and 8: 6 + 8 = 14

10 less than 14: 14 - 10 = 4

the product of 3 and 4: 3 * 4 = 12

the ratio of 2 to 3: 2/3

10 decreased by 8: 10 - 8 = 2

the quotient of 23 and 25: 23/23

3 increased by 33: 3 + 33 = 36

50% of 32: 50% * 32 = 0.5 * 32 = 16

4 0
3 years ago
Read 2 more answers
) Josef paid $10 for 6 avocados at the Grocery Mart. He wants to know what the price would be
Amiraneli [1.4K]

Answer:

5.00

Step-by-step explanation:

the price for 3 avacados is 3.00 because 6 are 10 if you divide 10 by 2 you get 5

6 0
3 years ago
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If Alice give an interest of 90$ for two years and 9% p.a., find the sum she has borrowed .
hodyreva [135]

Refer the attachment for your answer :)

4 0
2 years ago
Yoxel buys 4 1/2 gallons of soda. 1/4of the soda he bought was Pepsi and the rest was Sprite. How many gallons of Pepsi did Yoxe
marusya05 [52]

Answer:

4\frac{1}{4} gallons

Explanation:

Total amount of soda bought by Yoxel = 4\frac{1}{2} =\frac{9}{2} gallons

Amount of Pepsi =\frac{1}{4} gallons

Therfore,

Amount of sprite ==\frac{9}{2} -\frac{1}{4}\\=\frac{18-1}{4} \\=\frac{17}{4}\\ =4\frac{1}{4}gallons

8 0
3 years ago
The French Club ordered 16 pizzas for a party. Each pizza had 6 slices. Jose ate 7 of the slices. How many slices were left for
NikAS [45]
16 x 6 = 96
96 - 7 = 89
or
14 pizzas and 5 slices

Answer : 89 slices
4 0
2 years ago
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