Suppose for every 100 births in a country, the number of boys follows, approximately, a normal curve with a mean of 54 boys and standard deviation of 5 boys. If the next 100 births in a hospital in this country resulted in 39 boys (and thus 61 girls), would that be unusual

Z = -3 means that if the next 100 births in a hospital in this country resulted in 39 boys (and thus 61 girls), it would be considered unusual.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean and standard deviation , the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Values of Z of -2 or lower, or 2 or higher are considered unusual.

In this problem, we have that:

If the next 100 births in a hospital in this country resulted in 39 boys (and thus 61 girls), would that be unusual

This is Z when X = 39. So

Z = -3 means that if the next 100 births in a hospital in this country resulted in 39 boys (and thus 61 girls), it would be considered unusual.

this is not the answer this is just a question. is this middle school math?

step-by-step explanation:

steve should create a type of business report called a business plan. the correct option among the options that are already given in the question is the last or the fourth option. this business report created by steve will actually influence the investors about investing their money in steve's business. this business report will have all the details about the business, the amount of investment required and the amount of expected profit.