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A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2
Why is a correlation the most appropriate statistic? What is the null and alternate hypothesis? What is the correlation between student anxiety scores and number of study hours? Select alpha and interpret your findings. Make sure to note whether it is significant or not and what the effect size is. How would you interpret this? What is the probability of a type I error? What does this mean? How would you use this same information but set it up in a way that allows you to conduct a t-test? An ANOVA?
A computer store has 50 printers of which 30 are laser printers and 20 are ink jet printers. If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.
is there a significant difference in automobile insurance rates in different cities of comparable size in the u.s.? to
the national unemployment rate in a recent month was 4.9 percent. you think the rate may be different in your city so
a plane inclinded at an angle fo 45 degrees passes through a diameter of the base of a cylinder of radius r. Find the volume of the region within the cylinder and below the plane.
applications of quadratic equations maxima and minimaa rain gutter is to be made up of rectangular aluminum sheets 12
A computer processes jobs on a first-come first-serve basis in a time-sharing environment. The jobs have Poisson arrival rates with an average of six minutes between arrivals.
Label the Vertex and the Axis of symmetry
The new daily payroll is $1540. How many were originally employed at each rate?
Inquiries of the Poisson Portal interactive query system arrive at the central computer in a Poisson pattern at an average rate of 13 inquiries per minute.
Sketch the region enclosed between 2 - z = x2 + y2 and z2 = x2 + y2. Describe their curve of intersection
find the amount by which the utility company will have to increase its generating capacity in order to meet the needs of the area at the end of the decade. (Round your answer to two decimal places.)
The circumference of a sphere was measured to be 86000 cm with a possible error of 050000 cm. Use linear approximation to estimate the maximum error in the calculated surface area.
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