What statistical test should a researcher use if the researcher is examining the relation between two scale variables? a. Mann-Whitney U test b. Pearson correlation c. independent-samples t test d. chi-square test for independenc

The manager knows from previous years that the company will provide an annual bonus if theaverage sales per customer is greater than $80.00. Based on this sample – with a 5% level ofconfidence – should they expect an annual bonus? t-Test: Paired Two Sample for Means             Variable 1 Variable 2 Mean 77.6005 0 Variance 3098.585 0 Observations 100 100 Pearson Correlation #DIV/0!   Hypothesized Mean Difference 80   df 99   t Stat -0.43106   P(T<=t) one-tail 0.33368   t Critical one-tail 1.660391   P(T<=t) two-tail 0.667361   t Critical two-tail 1.984217   Here is the data that I ran through excel. I am having a hard time with the hypothesis, decision, and summary.

Please help I need in an hour Thankyou so much

Why are scatterplots helpful when investigating the association between quantitative variables

A hospital administrator wants a statistic to calculate the relationship between the degree of patient satisfaction and whether that patient was treated in the ER or admitted to the hospital. one-sample t point-biserial correlation O independent-measures t sign test

Please no written by hand

One group's measure of math anxiety following a stress management seminar (pre and post test scores).    A. T-test independent samples  B. T-test dependent samples  C. One-way ANOVA  D. Correlation  E. Chi square  F. Simple Regression

Use the attached table to answer the following: What is the dependent (response, outcome) variable?   What is the independent (explanatory) variable?   Describe the pattern of association between subjective class and satisfaction with financial situation.

Fear of heights - A psychologist has developed a new treatment for acrophobia (the extreme fear of heights) and wants to compare the results of this new treatment to the results of the standard treatment. A study is conducted where a random sample of 16 patients undergo the new treatment and their improvement scores on a diagnostic test are compared to a control sample of 13 patients who received the standard treatment. Summary scores for both groups are shown in the table below. Treatment Sample Mean Sample Standard Deviation New 50.9 12 Standard 47.2 11.4 The degrees of freedom for this problem is d f 26.287709. 1. Select the hypotheses that should be used to assess if the new treatment results in higher average improvement scores than the standard treatment. А. Но : И1 = µ2 vs. Ha : H1 # µ2 OB. Ho : µ1 = µ2 vS. Ha : H1 H2 2. Calculate the test statistic. ? V = 3. Calculate the p-value. p-value =

Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"