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1. State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain.
?(a) t=2.201
?(b) t=0
?(c) t=-2.089
?(d) t-2.237
(*****t0 on the graph is positioned to the left at -2.108****)
2. In a survey of 628 males ages? 18-64, 393 say they have gone to the dentist in the past year.
Construct? 90% and? 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.
3. In a random sample of 21 ?people, the mean commute time to work was 31.8 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a? t-distribution to construct a 90?% confidence interval for the population mean μ. What is the margin of error of mμ??
Find the density of energy state and for what a/b ratio (of the rectmygulm lattice spacing) would the Fermi circle just touch the edge of the firer Brillouin zone?
A tank whose bottom is a mirror is filled with water to a depth of 15.0 centimeter. Determine the apparent depth of the image of the fish
q1. 1. a wide long insulating belt has a uniform positive charge per unit area sigma on its upper surface. rollers at
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a radio tower has a 64-foot shadow cast by the sun. if the angle from the tip of the shadow to the top of the tower is
A dockworker loading crates on a ship finds that a 21-kg crate, initially at rest on a horizontal surface, Find the coefficients of static and kinetic friction between crate and floor
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A light beam traveling through air, enters a slab with n= 2.50 at a 45º angle with respect to the normal, At what angle to the normal does the ray leave the slab
question1consider mass and a frictionless ramp. the mass is pushednbspupward with some initial velocity. since of
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