Donna wants to test whether or not drinking coffee will immediately increase heart rate while sitting in class. Six people measured their heart rates before drinking coffee and then the same six people took their heart rates after drinking their coffee. Please calculate the t-statistic for this experiment; then state the critical value; then come to a conclusion concerning the null hypothesis; and then state what the implications are concerning drinking coffee.
No Coffee Coffee
79 84
71 78
84 87
66 75
74 80
76 82
In: Statistics and Probability
Donna wants to test whether or not drinking coffee will immediately increase heart rate while sitting in class. Six people measured their heart rates before drinking coffee and then the same six people took their heart rates after drinking their coffee. Please calculate the t-statistic for this experiment; then state the critical value; then come to a conclusion concerning the null hypothesis; and then state what the implications are concerning drinking coffee.
No Coffee Coffee
79 84
71 78
84 87
66 75
74 80
76 82
In: Statistics and Probability
1. The government imposes an excise tax on office rental space. Before the tax, the equilibrium price of office rental space was $3,500. After the tax is imposed consumers pay $3,600 on office rental space, $3,200 of which producers receive.
[1] a) Calculate the excise tax on office rental space.
[1] b) What is the incidence of the tax to the consumer?
[1] c) What is the incidence of the tax to the producer?
[2] d) Illustrate your answer on a diagram using the concept of
elasticity to explain what must be true for this scenario to
arise.
In: Economics
Please use simple terms so I can understand better. thanks!
Why do cells need to multiply? Discuss a few reasons. Try to do this without using the word “reproduction” or “reproduce”.
Define homologous chromosomes
Discuss the chromosomal number of cells before mitosis and after mitosis
Is mitosis involved in asexual reproduction?
What are telomeres and why are they important?
How does cytokinesis (cytoplasmic division) differ in animal cells vs plant cells?
Define oncogene, proto-oncogene, neoplasm, tumor, and metastasis
In: Biology
The Grewals agreed to monthly payments on a mortgage of $363,000.00 amortized over 25 years. Interest for the first five years was 4.3% compounded semi-annually.
a. Determine the Grewals’ monthly payments.
b. Determine the balance owing after the 5-year term.
c. Before renewing for another term of 5 years at 4.5% compounded semiannually, the Grewals make an additional payment of $21,000. If they keep the same monthly payments, by how much will the amortization period be shortened?
note; sir i need the full method that how you done it
In: Finance
A.)There are four important steps in a Gram stain. List the specific stains/chemicals used in each step, and the color of both Gram positive and Gram negative bacteria after each step.
B.)Describe 2 reasons why heat fixing a specimen before viewing under a microscope is important.
C.)Describe how the design of the swan - necked flasks in Pasteur's classic experiment helped disprove spontaneous generation. What were the results of the experiment? How did it counter the "vital force" argument believed by many scientists.
In: Biology
In this discuss, you will explore the use of VR and AR in the event industry and how they are and can be used to enhance the event experience before, during and after its occurrence.
Questions
What are virtual and augmented reality and how are they used in the hospitality industry?
What are the best practices of how VR and AR may be specifically used in the event industry in the days of large, virtual events and COVID-19?
In what ways do VR and AR compliment the trends discussed in the article, “A futurist's thoughts on consumer trends shaping future festivals and events.”
In: Operations Management
Assume 200. mL of 0.400 M HCl is mixed with 200 mL of 0.250 M Ba(OH)2 in a constant-pressure calorimeter. The temperature of the solutions before mixing was 25.10C; after mixng and alowing the reaction to occur, the temperature is 27.78C. Determine ΔrH for this reaction in units of kJ/mol-rxn.
2 HCl(aq) + Ba(OH)2(aq) -> BaCl2(aq) + 2 H2O(l)
The densities of all solutions are 1.00 g/mL
The specific heat capacitites of all solutions are 4.20 J/(gC)
In: Chemistry
Some job applicants are required to have several interviews before a decision is made. The number of required interviews and the corresponding probabilities are: 1 (0.09); 2 (0.31); 3 (0.37); 4 (0.12); 5 (0.05); 6 (0.05).
a) Does this information describe a probability distribution? What is the sum of probabilities?
b) Assuming it does, find its mean and standard deviation.
c) Use the range rule of thumb to identify the range of values for usual numbers of interviews.
d) Is it unusual to have a decision after just one interview? Explain.
In: Statistics and Probability
Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 4.34 m/s, while Jane takes off in a direction 60.9o north of east at 5.71 m/s. How long is it before they are 26.7 m apart?
| Tries 0/8 |
What is the velocity of Jane relative to Mary? Enter first the
x-component and then the y-component.
| Tries 0/8 |
How far apart are they after 3.96 s?
In: Physics