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drek231 [11]
3 years ago
8

Ted tossed a coin several times and recorded the number of heads and tails in the following table:

Mathematics
1 answer:
sineoko [7]3 years ago
3 0
<h2>Answer:</h2>

Option: D is the correct answer.

                     D.  0.45

<h2>Step-by-step explanation:</h2>

The results of the experiment are given as follows:

Coin Experiment Side of Coin Number of Tosses

                              Heads                           18

                               Tails                             22

This means that total 40 experiments were performed.

( Since 18+22=40)

Also, the number of times head turn up=18

Hence, the experimental probability of getting heads is:

Ratio of number of times head turn up to the total number of experiments performed.

Hence,

Probability=\dfrac{18}{40}\\\\\\Probability=0.45

   Hence, the experimental probability of getting head is:

                                         0.45

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Cal Amity decided to survey 880 inhabitants of the Kingdom so that he could have a confidence level of 95% and a margin of error of 3%. He found that 72% of his sample answered "yes" to the second survey question, which was, "Have you done anything, or will you do anything, to prepare your kitchen for Gourmando's visit?"

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