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Excel files needed for these problems.
1. Modern software applications require rapid data access capabilities. An experiment was conducted to test the effect of data file size on the ability to access the files (as measured by read time, in milliseconds). Three different levels of data file size were considered: small - 50,000 characters; medium-75,000 characters; or large-100,000 characters. A sample of eight files of each size was evaluated. The access times, in milliseconds, are in the data file ACCESS (Data-One spreadsheet).
a. At the 0.05 level of significance, is there evidence of a difference among mean access read times for the three file sizes? (Assume that the assumptions for this type of test are satisfied.)
Complete the following:1. State H0. 2. State H1. 3. State the value of α. 4. State the value of the test statistic. 5. State the p-value. 6. State the decision in terms of H0 and why. 7. State the decision in terms of the problem.
b. If appropriate, use the Tukey-Kramer multiple comparisons procedure to determine which file sizes significantly differ with respect to mean access read time. (Use α = 0.05.)
The displacement s cm of the end of a stiff spring at time t seconds is given by: s = a (e^-kt) sin 2πft. Determine the velocity and acceleration of the end of the spring after 2 seconds if a = 3, k = 0.75 and f = 20.
A car leaves Lima at noon traveling due West at 65 mph. At 2 PM, a car 300 miles south of Lima heads towards Lima at 70 mph. How quickly is the distance between the cars changing at 4 PM?
Find an equation for the planet's orbit. (Place the origin at the center of the orbit with the sun on the x-axis.
Compute the number of calenders that should be ordered. The J&B Card Shop sells calendars depicting a different Colonial scene each month. The once-a-year order for each year's calendar arrives in September.
Assume that d=sa+tb is a linear combination of integers a and b. Find infinitely many pairs of integers ( s sub k, t sub k ) with d=s sub k a + t sub k b
Hypothesis test for single mean
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the length of a pool is 22 ft. the width is 40 ft. if the volume of the pool is 2,000 ft3, which equation below could be used to find the depth of the pool?
why can't I search by subject instead of school? I just want some precalc study resources for my daughter, who is in high school. The organization of this site makes no sense. Isn't there a search box??
Rational root theorem and synthetic division - Use the rational roots theorem and synthetic division to find the years the country " broke even" (dept = surplus = 0) from 1990 to 2000.
Finding a straight line to a set of data yields the following prediction line: Y_hat=2 5Xi interpret the meaning of the Y intercept, bo
Two boxes of brazils are mathematically similar, their lengths are 12cm and 24cm. The surface area and volume of the smaller box are 250cm2 and 240cm2 respectively.
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