8 StatCrunch. IHE Normal Distribution For 1-3, draw the standard normal curve for each and shade...
4. Interpreting area under the standard normal curve Suppose Dunlop Tire manufactures tires having the property that the mileage the tire lasts approximately follows a normal distribution with mean u=70,000 miles and a standard deviation o=4400 miles. a. What percent of the tires will last at least 75,000? b. Suppose Dunlop gives a warranty for tires to last 60,000 miles. What percent of the tires will last 60,000miles or less? c. What is the probability that a randomly selected Dunlop...
consider a standard normal distribution to answer the following question .draw the normal curve, shade the appropriate region and solve the following question a ) P( Z < -1.50 ) b ) P (- 1.00 < Z < 0.50 ) c ) what is the Z score that separates the upper 3% from the lower 97% of a normal distribution
14. Given a standard normal distribution, find: (For full credit need to draw the curve and shade the area) a) P(−1.13 < z < 3.11). b) P (0.21 < z < 0.81).
2. What are the parameters (Mean and standard deviation) for a standard normal distribution? 3. Find the critical value for Zoo 4. Find the z score that would give us the area in the right 30% of the standard normal curve. 5. Find the area to the left of z = -0.42. Draw a standard normal curve of the region described. 6. Find the area to the right of z=0.89. Draw a standard normal curve of the region described. 7....
14 (3.28) Find the proportion of observations ( 0.0001) from a standard Normal distribution that falls in each of the following regions. In each case, sketch a standard Normal curve and shade the area representing the region. (a)2 2.03 : (c)z > 1.55: (d)一2.03 < z < 1.55 :
Name Date Points indicated in l's Confidence Interval Activities 1. a. Draw the standard normal curve and shade the area corresponding to the middle 90% of the standard normal distribution. Determine the values-z and z such that the area under the standard normal curve between-z and z is equal to 0.90. Round the z-values to the nearest thousandth. [(4) אto ,י +0100enor m C.9s,0,1)=045 .go .oS 210.5.0 -\.045 -2 b. Repeat part (a) for the middle 95% of the distribution....
Use Table A to find the proportion of observations from a standard Normal distribution that satisfies each of the following statements. In each case, sketch a standard Normal curve and shade the area under the curve that is the answer to the question. 6. What proportion of observations satisfy z < 2.85? Answer to 4 decimal places. Answer 7. What proportion of observations satisfy z > 2.85? Answer to 4 decimal places. Answer 8. What proportion of observations satisfy -1.66...
d the area under the standard normal curve that corresponds to the following Z values, e given bell shaped curves, identify, and shade the appropriate region: (1 point ea) Fin Use th 11) P(z > 2.37) 12) P(z< -1.26) 13) P (-0.85<z2.44) 14) Find the Z score for the standard normal distribution using the given bell shaped curve P( -z<Z<z)-0.95 15) Find the Z score for the standard normal distribution using the given bell shaped curve P(Z>z)-0.881000
Shade the area under the standard normal curve corresponding to the probability below. P(1 ≤ z ≤ 2 ) a. b. c. d. e.
1) Find the area und scores. Ensure that you also draw the curve and shade the area er the standard normal probability distribution between the following pairs of z- you are solving for a. z 0 and z -2.00 b. z 0 and z 3.00 cz-0 and z 1.5 2) Find the following probabilities for the standard random variable z. Ensure that you all curve and shade the area you are solving for. a. P(z >1.46) b. P(z -1.56) c....