Develop a scatter diagram for these data
Calculate the mean and standard deviation of x
Calculate the mean and standard deviation of y
Calculate the covariance
Calculate the correlation coefficient
Compute the estimated regression equation: (find the slope and y-intercept)
Compute SSE, SST, SSR
Compute the coefficient of determination
Compute the mean square error
Compute the standard error of the estimate Use the t test to test the following hypotheses ():
Use the F test to test the hypotheses in part (11) at the same level of significance.
Calculate the value when Develop a 95% confidence interval for the expected value of Develop a 95% prediction interval for
Answers
Answer:
THE ANSWER IS VERY LONG
Step-by-step explanation:
COVID-19 spreads primarily when people are in close contact and one person inhales small droplets produced by an infected person (symptomatic or not) coughing, sneezing, talking, or singing.[21][66] The WHO recommends 1 metre (3 ft) of social distance;[6] the U.S. CDC recommends 2 metres (6 ft).[19] People can transmit the virus without showing symptoms, but it is unclear how often this happens.[6][19][21] One estimate of the number of those infected who are asymptomatic is 40%.[67]
People are most infectious when they show symptoms (even mild or non-specific symptoms), but may be infectious for up to two days before symptoms appear (pre-symptomatic transmission).[21] They remain infectious an estimated seven to twelve days in moderate cases and an average of two weeks in severe cases.[21]
When the contaminated droplets fall to floors or surfaces they can, though less commonly, remain infectious if people touch contaminated surfaces and then their eyes, nose or mouth with unwashed hands.[6] On surfaces the amount of active virus decreases over time until it can no longer cause infection,[21] and surfaces are thought not to be the main way the virus spreads.[19] It is unknown what amount of virus on surfaces is required to cause infection via this method, but it can be detected for up to four hours on copper, up to one day on cardboard, and up to three days on plastic (polypropylene) and stainless steel (AISI 304).[21][68][69] Surfaces are easily decontaminated with household disinfectants which kill the virus outside the human body or on the hands.[6] Disinfectants or bleach are not a treatment for COVID‑19, and cause health problems when not used properly, such as when used inside the human body.[70]
Sputum and saliva carry large amounts of virus.[6][19][21][71] Although COVID‑19 is not a sexually transmitted infection, kissing, intimate contact, and faecal-oral routes are suspected to transmit the virus.[72][73] Some medical procedures are aerosol-generating,[74] and result in the virus being transmitted more easily than normal.[6][21]
COVID‑19 is a new disease, and many of the details of its spread are still under investigation.[6][19][21] It spreads easily between people—easier than influenza but not as easily as measles.[19] Estimates of the number of people infected by one person with COVID-19 (the R0) have varied widely. The WHO's initial estimates of the R0 were 1.4-2.5 (average 1.95), however a more recent review found the basic R0 (without control measures) to be higher at 3.28 and the median R0 to be 2.79.[75]
The virus may occur in breast milk, but it's unknown whether it's infectious and transmittable to the baby.