1)The normal distribution is a?

• Continuous distribution
• Discrete distribution
• Positively skewed distribution
• Binomial distribution

2)Which of the following statements is correct regarding the standard normal distribution?

• It is also called the z distribution.
• Any normal distribution can be converted to the standard normal distribution.
• The mean is 0 and the standard deviation is 1.
• All of the above are correct.

3)Which of the following are characteristics of the normal distribution?

• It is bell-shaped.
• It is a symmetric distribution.
• Skewed to the right
• It is a bell-shaped and a symmetric distribution.

4)In one region, the September energy consumption levels for single-family homes are found to be normally distributed with a mean of 1050 kWh and a standard deviation of 218 kWh. Find P₄₅, which is the consumption level separating the bottom 45% from the top 55%.

(Round your answer to one decimal place)

5)For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 50 hours and a standard deviation of 15 hours. John owns one of these computers and wants to know the probability that the length of time will be between 50 and 70 hours.

(Round your answer to four decimals)

6)A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of 3. If we can approximate the distribution of these grades by a normal distribution, what percent of the students scored higher than 68?

7)Cans of regular Pepsi are labeled to indicate that they contain 12 oz. The sample statistics are n = 36 and x = 12.29 oz.If the Pepsi cans are filled so that = 12.00 oz (as labeled) and the population standard deviation is = 0.9 oz (based on the sample results),find the probability that a sample of 36 cans will have a mean of 12.29 oz or greater.(Round your answer to four decimals)

Help on this there is no missing data