Find y2
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A sample of average high temperature during July (x) of cities in Colorado compared to their elevation in feet (y) yields the following results:
x | 90 | 75 | 85 | 94 | 89 | 94 | 78 | 76 | 88 |
y | 5280 | 9494 | 6035 | 4078 | 6191 | 4583 | 8000 | 8022 | 5807 |
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- Suppose you computed r=−0.285 using n=13 data points that were collected when studying the relationship between average weekly overtime and years working for a company. Using the critical values table below, determine if the value of r is significant or not. df12345678910CV (+ and -)0.9970.9500.8780.8110.7540.7070.6660.6320.6020.576df11121314151617181920CV (+ and -)0.5550.5320.5140.4970.4820.4680.4560.4440.4330.423df21222324252627282930CV (+ and -)0.4130.4040.3960.3880.3810.3740.3670.3610.3550.349df405060708090100CV (+ and -)0.3040.2730.2500.2320.2170.2050.195 Select the correct answer below: r is significant because it is between the positive and negative critical values. r is not significant because it is between the positive and negative critical values. r is significant because it is not between the positive and negative critical values. r is not significant because it is not between the positive and negative critical values.Researchers interested in lead exposure due to car exhaust sampled the blood of 52 police officers subjected to constant inhalation of automobile exhaust fumes while working traffic enforcement in a primarily urban environment. The blood samples of these officers had an average lead concentration of 124.32 µg/l and a SD of 37.74 µg/l; a previous study of individuals from a nearby suburb, with no history of exposure, found an average blood level concentration of 35 µg/l. Based on your preceding result, without performing a calculation, would a 99% confidence interval for the average blood concentration level of police officers contain 35 µg/l? Based on your preceding result, without performing a calculation, would a 99% confidence interval for this difference contain 0? Explain why or why not.A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February. The data are collected, and the results show an average difference score of MDD = 3.8 and a sum of squares of SS = 522.15. What is the value for degrees of freedom for this repeated-measures t test? 47 15 50 16 What is the sample standard deviation (s) for the D scores? 1.48 5.9 522.15 34.81 What is the estimated standard error of the mean difference (sMDMD) for this study? 0.37 2.18 1.48 1.22
- A researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.A survey among the workers in a large manufacturing company was taken, in order to findout from which company the workers had purchased their mobile phones, and to find outwhether the choice of mobile phone company was related to the type of worker. The resultsare shown in the table below. ls there evidence, at 5% level, that the choice of Phone Company is independent of the type ofworker?Here is a bivariate data set.xy182425915011737106295223812246 Find the correlation coefficient and report it accurate to four decimal places. r =
- In a detailed study of the productivity of a laboratory, the age distribution of its workers was analyzed, and the results were as follows, the kurtosis coefficient is equal toA researcher wants to examine the relationship between time spend on social media (variable X) and loneliness (variable Y) in young adults. A randomly sample of n = 52 young adults was asked how much time in average they spend on social media each day and how lonely day feel on a typical day. The partial computations of collected data produced the following results: SP = -14 MX = 10 SSx = 36 MY = 16 SSY = 49 A. Based on these results, is there a significant correlation between time spend on social media and loneliness among young adults? Use a Pearson correlation test with p < .05, 2-tails to answer this research question. Follow the steps of hypothesis testing and insert your answers below. In your calculations,round all numbers to two decimal places to avoid rounding errors. ANSWER H0: H1: Computed Pearson r = df for decision about H0: Critical r-value used for decision about H0: Decision about H0 (i.e., reject or fail to…A sample of n = 16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2?
- A sample of 100 stoaches are fed with pellets of food. For each stoach, the experimenters recordthe number of pellets eaten.Some sample statistics for the numbers of pellets eaten follow:N10063.47RI9.21f49minQ1 53.49median 65.2371.25Q378maxState the IQR, to 2 decimal places.IQR=?A researcher conducted a t-test for independent samples to evaluate the mean difference between two treatment conditions and obtained t(48) = 4.00. What would be the computed F, if the outcomes of this study were evaluated by one-actor ANOVA for independent samples?