2. Given a normal distribution with u = 30 and o = 6, find: a. the normal curve area to the right ofx = 17 b. the normal curve area to the left of x = 22 c. the normal curve area between x = 32 and x = 41
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- Find the area of standard normal curve and provide a sketch of the curve.Suppose the lengths of human pregnancies are normally distributed with u = 266 days and o = 16 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with µ = 266 days and o = 16 days. The area to the left of X = 235 is 0.0263. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The proportion of human pregnancies that last more than days is O B. The proportion of human pregnancies that last less than days is 235 Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The probability that a randomly selected human pregnancy lasts less than days is O B. The probability that a randomly selected human pregnancy lasts more than days is (b) The figure…Age Age Gender Under 40 40 or Older Total Male 12 2 14 Female 8 3 11 Total 20 5 25 The table above shows the distribution of age and gender for 25 people who entered a contest. If the contest winner will be selected at random, what is the probability that the winner will be either a female or 40 or older? 13/25 16/25 3/25 10/25
- 4. Which proportion of a normal distribution is located between the mean and z = +1.40? 5. A vertical line drawn through a normal distribution at z = +2.11 separates the distribution into two sections, the body and the tail. Which proportion of the distribution is in the tail?Find the area of the normal curve of:a) for z > -1.34 b) to the left of z=-2.92Find the area under the standard normal curve that lies between the following: Z = -1.56 and Z = -0.56. Select one: a. 0.1587 O b. 0.2283 c. 0.3471 d. 0.8413
- The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curv Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct. A 19.1% B 30.9% C 38.2% D 69.1% E 68.27% A The percentage of people with blood pressure between 130 and 150 mm. B The percentage of people with blood pressure between 140 and 150 mm. D The percentage of people with blood pressure over 150 mm.Suppose the lengths of human pregnancies are normally distributed with p = 266 days and o = 16 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with u = 266 days and o = 16 days. The area to the left of X = 230 is 0.0122. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The proportion of human pregnancies that last more than days is B. The proportion of human pregnancies that last less than days is 230 266 Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) A. The probability that a randomly selected human pregnancy lasts less than days is B. The probability that a randomly selected human pregnancy lasts more than days is (b) The figure…5) Draw a normal curve representation for the area...then find the numerical value of the area under the normal curve. a) above the mean b) less than z = -0.29 c) to the right of z = 2.86 d) NOT between -1.09 and 0.16 standard deviations above the mean
- 10. a.) Find the z-value such that 80 percent of the area under the standard normal curve lies between -z and z. b). Find the z value if the normal curve area to the right of z is 0.6449. is from N(0,1) de in a cmall town at California is 0.2 everyday, what is theDraw a normal curve representation for the area…then find the numerical value of the area under the normal curve.a) below the meanb) to the left of z = -2.17c) greater than z = 1.28d) between 2.16 and 2.49 standard deviations above the meanFind the indicated area under the standard normal curve. Between z = - 2.23 and z = 2.23