Calcium levels in people are normally distributed with a mean of 9.5 mg/dL and a standard deviation of 0.5 mg/dL. Individuals with calcium levels in the bottom 5% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.

Individuals with calcium level 8.7 mg/dL or low are considered with low calcium level and above that are not considered low.                            

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 9.5 mg/dL

Standard Deviation, σ = 0.5 mg/dL

We are given that the distribution of calcium levels is a bell shaped distribution that is a normal distribution.

Formula:

We have to find the value of x such that the probability is 0.05

Calculation the value from standard normal z table, we have,  

Thus, individuals with calcium level 8.7 mg/dL or low are considered with low calcium level and above that are not considered low.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950