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361 College students recorded the number of hours of TV they watched per week. The average is 6.504 hours with the standard deviation of 5.584. Find a 99 % confidence interval for MU and interpret t
A pickup truck has a five-liter, V6, SI engine operating at 2400 RPM. The compression ratio rc = 10.2:1, the volumetric efficiency Tlv = 0.91.
To determine whether or not the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected. It was found that the average was $8,250 per day. From past
In a recent survey, 72% of the community favored building a health center in their neighborhood. If 14 citizens are chosen, find the probability that (A) exactly 10, (B) between 8 and 12, (C) at lea
What is the value of the degrees of freedom for this test? Give bounds for the p-value for this test. Based on the p-value you calculated, what is your statistical decision?
State the null and alternative hypotheses: (Type "mu" for the symbol ? , e.g. mu >1 for the mean is greater than 1, mu < 1 for the mean is less than 1, mu not = 1 for the mean is not equal to
Determine the diameters of each exit ducts and the power produced by the turbine. Assume negligible changes in kinetic energy.
With = 7, a 90% confidence interval for a population mean was 103 to 108.
Determine the present worth of a series of annual deposit of 1200 during years 5 through 14 and a series of withdrawals of 1800 through years 3 to 13. The interest rate is 5 percent.
Use a t test with a=0.05 and a directinal alternative, to investigate the research hypothesis that birthweight is lower when the elder sibling is male.
Calculate the screw torque required to raise the load and the efficiency of the thread. Take mu = 0.25. What torque is required to lower the load?
The table below summarizes baseline characteristics on patients participating in a clinical trial
How much money can be withdrawn at the end of 21 years if $6,000 is deposited at the end of each year for 14 years, and no deposits are made after, where the fund earns 1.2 percent?
If a correlation coeficiant calculated for n=14 and a=0.01 is found to be r=.0856 what is the test value for the t-test?
The question states an a.c. Voltage , V comprises of a fundamental voltage of 100 V rms at a frequency of 120Hz. Write down an expression for the voltage waveforms.
Given a total study size of n, and comping g levels of the explanatory factor, the numerator degrees of freedom and the denominator degrees of freedom for the F test in a one-way ANOVA are, respecti
The P-value for an analysis of variance F test statistic is which probability from the F distribution?
If the sensible heat load is 400 kJ/s and the latent heat load is 600 kJ/s, at what wet bulb temperature does the inlet air (DB = 20 C) need to be maintained? Also, what does it need to be when all
What is the point estimate for the unknown parameter alpha? Use the c2 goodness of fit test to test the hypothesis that the number of brown trout caught each hour is Poisson dist
A reversibleexpansion according to the law pv2 =constant restore thefluid to its initial state. Calculate the value of n in the first process.
What is the value of expected sales when no money is spent on advertising and the product price and unemployment rate are both zero?
The average thermal conductivity is 71.5 W/mC and the heat transfer coefficient is 53 W/m2C. Determine the time needed to heat the rod to 1950 K. Specific heat and density of the rod are 616 J/kg C
The sample of test scores is given below. Create a relative frequency histogram of the data with 5 classes. Describe the shape of the distribution.
What is the net level premium for a $1,000 face amount three-year term policy for a 50-year-old male, assuming an interest rate of 5 percent?
If the cross sectional area of the window is 600 mm2, calculate the number of atoms of helium gas that flow across the window in 1 hour. The concentration of helium in the furnace 6.0 x 1023 atoms/m