Using the binomial distribution, it is found that there is a 0.6836 = 68.36% probability that she guesses at least one right.
For each question, there are only two possible outcomes, either she gets it right or she does not get it right. The probability of getting a question right is independent of any other question, hence the <em>binomial distribution</em> is used to solve this question.
<h3>What is the binomial distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem:
- There are 5 questions, hence n = 5.
- For each question, she guesses one out of 4 options, hence p = 1/4 = 0.25.
The probability that she guesses at least one right is:
In which:
Hence:
0.6836 = 68.36% probability that she guesses at least one right.
You can learn more about the binomial distribution at brainly.com/question/24863377
The true statement about having too little body fat is that it poses a health risk.
<h3>What is
body fat?</h3>
Body fat can be defined as a complex connective tissue (adipose tissue) that are saddled with the responsibility of playing specific roles during metabolism and homeostasis in the body of a living organism.
According to physical and health education, body fat is an essential and important macromolecule that performs a wide variety of bodily functions. Thus, you may increase your risk for heart disease and gastrointestinal problems when you have too little body fat.
Read more on body fat here: brainly.com/question/25347634
Assuming Evelyn spent the day shopping and made the following purchases: $) Camera 66.31 Hat 13.44 Parking 8.00 Planner 9.78 , the amount money in Evelyn’s account to begin with is: b. $305.69
Using this formula
Amount of money =Account balance+Purchases
Where:
Account balance=$208.16
Purchase =Camera+Hat+Parking+Planners
Purchase=$66.31+$13.44+$8.00+$9.78
Purchased=$97.53
Let plug in the formula
Amount of money=$208.16+$97.53
Amount of money=$306.69
Inconclusion assuming Evelyn spent the day shopping, the amount money in Evelyn’s account to begin with is: b. $305.69
Learn more here:
brainly.com/question/6070026
JC only. Because AB and LH are not parallel to JC