Numerade

Questions asked

BEST MATCH

For the remaining questions, suppose a tax of $24 per guitar is levied on the consumers. b) (6 points) How much will the consumers pay for guitars after the tax? c) (6 points) How much will producers receive for guitars after the tax?

View Answer

BEST MATCH

What is the sarcolemma? A. The plasma membrane of a muscle fiberB. The protein that binds calciumC. The space between myosin and actinD. The mitochondrion in muscle cells

View Answer

BEST MATCH

Suppose we draw n random samples (X1, .. , Xn), and an estimator 2 Ô(X1, ... , Xn) is proposed as n (XI, Xn) = X;I(Xi + 0, and X; # 6), > n i=1 where I(.) is an indicator function, I(X; ZK05 # 0, and Xi + 6) = 0, if Xi € {0,6}, and I(X; # 0, and X; # 6) = 1, if Xi E {2,4}. More specifically, we only take the summation for all samples NOT equal to 0 or 6. Is Ô(X1, ... , Xn) a an unbiased estimator for E(X). Why? (Hint: find probability mass function of XI(X + 0, and X + 6).)

View Answer

BEST MATCH

How do stress and strain relate to the mechanical properties of materials?

View Answer

BEST MATCH

People who are less well off are hurt more by high inflation than wealthier people. This describes: O a change in aggregate demand O expansionary gaps O distributional effects O exogenous spending O recessionary gaps

View Answer

BEST MATCH

Rewrite as sums or differences of logarithms. $\log_c(x^8y^2z)$

View Answer

BEST MATCH

Identify the correct equation to be used for direct shear stress. $ \sigma = \frac{Mc}{I} $ $ \tau = \frac{P}{A_s} $ $ \tau = \frac{Tr}{J} $ $ \sigma = \frac{P}{A} $

View Answer

BEST MATCH

A rigid beam (ABC) is supported by an aluminum link (1) and a steel link (2) above and to the right. Both links have a cross-sectional area of $A = 50 \text{ mm}^2$. Let $E_{AL} = 70 \times 10^9 \text{ Pa}$ and $E_{ST} = 200 \times 10^9 \text{ Pa}$. If $P = 110 \text{ kN}$ determine, a. The elongation of link (1), b. The elongation of link (2). Extra credit: Determine the vertical deflection of the beam at point B.

View Answer

BEST MATCH

Problem 2. A new purification unit is installed in a chemical process. Before its installation, a random sample yielded the following data about the percentage of impurity: $\bar{x}_1 = 9.85$, $s_1^2 = 6.79$, and $n_1 = 10$. After installation, a random sample resulted in $\bar{x}_2 = 8.08$, $s_2^2 = 6.18$, and $n_2 = 8$. a) Can you conclude that the two variances are equal? Use $\alpha = 0.05$. b) Can you conclude that the new purification device has reduced the mean percentage of impurity? Use $\alpha = 0.05$.

View Answer

BEST MATCH

2. A car is traveling at $v_0$ = 85 mph when the driver suddenly needs to apply the brakes. Identify the braking distance $d$ [ft] needed for the following road conditions: a. Dry asphalt b. Wet asphalt c. Snow-covered road d. Icy road e. How would you interpret results?

View Answer

jill s.