Please answer all questions Find the probability by using Empirical Rule for the following (Do not use Z-table); Given population mean of =7.6 and

Please answer all questions

1. Find the probability by using Empirical Rule for the following (Do not use Z-table);

   Given population mean of μ =7.6 and a standard deviation of  σ = 0.40,

   find the probability of P(x>8).

2. True or False, 95% data fall between three standard deviation?

3. Assume that a certain bacteria contaminated in a gallon of milk is normally distributed with a mean μ=2500 and a standard deviation σ= 46.3. Find the probability that a randomly selected adult has an IQ between 2350 and 2650.

4. Assume that adults have IQ scores that are normally distributed with μ=38 and a standard deviation σ=12. Find the Percentage that a randomly selected adult has an IQ less than 60.

5. True or False, If the data falls between two standard deviations, we call it unusual.

   
   

6. Find the probability by using Empirical Rule for the following (Do not use Z-table);

   Given population mean of μ =90 and a standard deviation of  σ = 10,

   find P(80