Numerade

Questions asked

BEST MATCH

A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken a statistical methods course that involved significant computer interaction. Group 2 had taken a statistic methods course that did not use computers. The students' attitudes were measured by administering the Computer Anxiety Rating Scale (CARS). A random sample of 11 nursing students from Group 1 resulted in a mean score of 66.4 with a standard deviation of 4.2. A random sample of 13 nursing students from Group 2 resulted in a mean score of 72.4 with a standard deviation of 8.6. Can you conclude that the mean score for Group 1 is significantly lower than the mean score for Group 2? Let $\mu_1$ represent the mean score for Group 1 and $\mu_2$ represent the mean score for Group 2. Use a significance level of $\alpha = 0.05$ for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 2 of 4: Compute the value of the $t$ test statistic. Round your answer to three decimal places.

View Answer

BEST MATCH

8. Your company wants to know the product yield (how much product is obtained in relation to the initial milk) of a process. They know that using 1000 tons of milk they obtain 200 tons of final product. Calculate the product yield as a percentage of the initial milk. 9. The initial milk which is storage in a silo (500 kg) has a protein content of 4% (g protein/ 100 g milk). What is the amount of protein in the silo expressed as kg? 10. The milk presented in the silo in question 9 is processed to extract the protein. The amount of product recovered is 20 kg with a protein content of 80 % (g protein/ 100 g milk). Calculate the protein extraction yield as a percentage of the protein contained in the initial milk.

View Answer

BEST MATCH

Question 4 continued (b) An unknown compound (A) gave the microanalytical data C, $ 36.95 \% ; \mathrm{H}, 5.68 \% ; \mathrm{Br} $, $ 40.96 \% ; \mathrm{O}, 16.41 \% $. The mass spectrum showed peaks at $ \mathrm{m} / \mathrm{z} 164 $ and 196, assigned as molecular ions, in a 1:1 ratio. The infrared and $ { }^{1} \mathrm{H} $ NMR spectra of the compound are shown below. 3.56 ppm 2 H 2.35 ppm 2 H triplet triplet 1.62 ppm 2 H sextet $ \mid $ $ \delta / \mathrm{ppm} $

View Answer

BEST MATCH

How many atoms are contained within a molecule of trinitrotoluene, C6H2CH3(NO2)3

View Answer

BEST MATCH

Two unpacked BCD digits are available in locations 30H and 31H. Write an 8051 ALP to pack these two BCD digits and store the result in accumulator

View Answer

BEST MATCH

In a ___ system of stratification, there is little social mobility and people do not have social relationships with those in another social tier.

View Answer

BEST MATCH

\int -\frac{1}{2(t+1)^2} + \frac{1}{2} dt

View Answer

BEST MATCH

Q4: Add the Q3 array to itself (example: array + array) and call it Q4. This will add the corresponding values in each cell to each other.

View Answer

BEST MATCH

Consider $f(x) = \frac{4x^2+4x-3}{x^2+2x-15}$ \newline The horizontal asymptote is: y= \newline The vertical asymptotes are (write your answer in increasing order of number

View Answer

BEST MATCH

QUESTION 15 A stock has a beta of 1.6. The pure rate of interest is 3 percent and investors require a 3 percent inflation premium. What is the required rate of return on this stock if the market risk premium is 6 percent? (Hint: First, calculate the risk-free rate using the pure rate and the inflation premium. Next, use this risk-free rate to find the required return on the stock.) ? ?. 16.5% ? ?. 15.7% C. 17.4% OD. 12.9% ? ?. 14.8% OF. 13.7% QUESTION 16 Games R' Us Inc. is expected to pay no dividends for the next six years. At the end of the sixth year it will pay a dividend of $45 and cease operations. How much would you pay for the stock if you require a 10% rate of return? A. $22.58 ?. $14.11 C. $19.76 D. $28.22 ? ?. $16.93 OF. $25.40

View Answer

lindsey t.