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You have been studying the effects of different fertilizers on the growth of certain produce. In the latest installer of your experiment, you are testing Quebec's own "Gro-Haut" fertilizer and its effects on carrots. From the sample of carrots that you have measured, you calculate an average length of 24 cm with a standard deviation of 4. Please construct a confidence interval for the mean length of the carrotsusing Gro-Haut in the following circumstances:
a) Sample size = 35, confidence level = 98%.
b) Sample size = 15, confidence level = 90%.
c) What would be the minimum sample needed to estimate the population mean of the length of carrots using Gro-Haut to within 1.5 cm with 99% confidence?
An expensive fencing along the lots length costs $20 per fott and an inexpensive fencing along the two side widths costs only $8 per foot. the total cost of the fencing along the three sides comes to $3280. What is the area of the lot?
Determine the probability without replacement
find the surface area obtained by rotating the curve 9x=y^2+18, 2 is less than or equal to x which is less than or equal to 6.
a bridge is built in the shape of a semielliptical arch. it has a span of 104. the height of the arch 25 feet from the center is 12 feet. find the height of the arch at its center.
There were 59 more student tickets sold than adult tickets. How many adult tickets were sold?
Find an equation to approximately model the variation V if x is the number of hours after midnight and high tide occurs at 8:00 am.
Identification of the Slope, y-intercept, and x-intercept of the given equation
Show that if sum a_n converges absolutely then sum a^2_n also converges absolutely Does this proposition hold without absolute converge
From the top of a 230 ft lighthouse, the angle of depression to a ship in the ocean is 23°. How far is the ship from the base of the lighthouse? Round your answer to the nearest foot.
Show that the resulting motion is simple harmonic, and determine the circular frequency and period of the motion.
A field is in the form of a triangle pictured below. Angle A is 85± and angle B is 78±. The distance between B and C is 269 feet. Find, to the nearest foot, the distance between A and B.
If the the two parellel sides of a trapezium is 11cm and 18cm .and the height is 10 cm. find the area of the trapezium.
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