Consider testing Ho: H =20 against Ha: <20 where u is the mean number of latex gloves used per week by all hospital employees, based on Complete parts a and b. a. Compute the p-value of the test. The p-value of the test is (Round to four decimal places as needed.) D summary statistics n = 44, x= 19.2, and s= 11.1.

The post-lunch dip is the drop in mental alertness after a midday meal. Does an extract of the leaves of the ginkgo tree reduce the post-lunch dip? Assign healthy people aged 18 to 40 years to take either ginkgo extract or a placebo pill. After lunch, ask them to read seven pages of random letters and place an X over every e. Count the number of misses per line read. M. K. Pawlik, "The effect of ginkgo biloba on the post-lunch dip and chemosensory function," MS thesis, Purdue University, 2002. What is a placebo and why was one group given a placebo? A placebo is a treatment pill that is presented to the individuals as a control treatment. A placebo is a lower-strength version of the pill that allows researchers to account for any physiological effect of taking the pill. O A placebo is an inert pill that allows researchers to account for any psychological effect of taking the pill. A placebo is a different pill that allows researchers to account for any variational effect of taking the…

Part of an R output relating X (independent variable) and Y (dependent variable) is shown below. This analysis is based on 11 observations. Using what you know about how all of these values are related, fill in the remaining blanks. Round your answers to 4 decimals in Model Summary box. Round your answers to 2 decimals in the ANOVA table and beyond. Model Summary (4 decimal places each) R R-Squared Adj. R-Squared Pred. R-Squared Source Regression Residual Total ANOVA (2 decimal places each, where necessary) Sum of Squares X Model (Intercept) 0.3632 0.515 1000 RMSE Parameter Estimates (2 decimal places each) Beta Coef. Var. df 29.48 5.7871 Std. Error Std. Beta 0.699 Mean Square -0.72 t F Sig. 3.79 0.0043 -3.091 0.0129 Sig 0.0129

The data below represents the daily high temperature (in 0F) recorded at the Mount Washington Observatory in New Hampshire for the first 15 days of February 2021. Use the given data to answer questions 1 - 8. Source: https://www.mountwashington.org                                                                            15 21 25 16 21 14 13 -1 6 -2 -6 15 16 21 22   A. What is the first quartile Q1?___________________________ B. What is the third quartile Q3?_________________________ C. Calculate the range._________________ D. A typical data value lies how far from the mean? (Hints: Consider the computed standard deviation) ________________