![theman300045](/avatars/11107.jpg)
theman300045
12.11.2019 •
Mathematics
An environmentalist group collects a liter of water from each of 45 random locations along a stream and measures the amount of dissolved oxygen in each specimen. the mean is 4.62 milligrams (mg). forty-five water specimens were taken from randomly chosen locations. we assume that dissolved oxygen varies among sampling locations according to a normal distribution with σ = 0.92 mg/l. a statistician tells you that the power of the z test with α = 0.05 against the alternative that the true mean oxygen content is μ = 4.75 mg/l is 0.57.
step 1: to get higher power against the same alternative with the same α, what must we do? decrease the sample size. increase the sample size.
step 2: if we decide to use α = 0.10 in place of α = 0.05, does the power increase or decrease? increase decrease
step 3: if we shift our interest to the alternative μ = 4.5 mg/l and change nothing else, does the power increase or decrease? increase decrease
Solved
Show answers
More tips
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- S Style and Beauty How to Get Rid of Peeling Nails: Natural Remedies...
- S Science and Technology Understanding Magnetic Storms: A Guide to This Natural Phenomenon...
- F Family and Home What is Most Important in Men s Lives?...
- G Goods and services Which TV is better - LCD or Plasma?...
- C Computers and Internet Are there special gaming mice?...
- G Goods and services LED-подсветка в LCD-телевизорах: 5 причин, почему она лучше других технологий...
- C Computers and Internet Keep Your Mouse Pad Clean: The Right Way to Clean It?...
- C Computers and Internet 3D Glasses! What is this thing?...
Answers on questions: Mathematics
- M Mathematics Nuclear experiments performed in the ocean vaporize large quantities of salt water. Salt boils and turns into vapor at 1738 K. After being vaporized by a 10-megaton force,...
- M Mathematics Andre ran 2 kilometers in 15 minutes and Jada ran 3 kilometers in 20 minutes. Both ran at a constant speed. Did they run the same rate? Explain or show your reasoning. You...
- M Mathematics Simplify the expression: 6 + -5u + -5u + -U...
- M Mathematics If the quantity x varies inversely as y, and if x = 15 when y = 5, then what is the value of x when y = 102 O 30 O 7.5 O 10 O 20...
- M Mathematics the length, width, and height of cube are changed to 1/5 of their original size. By what factor does the volume of the cube decrease?...
- M Mathematics PLEASE HELP The circumference of a circle is 94.2 meters. Find the area of the circle....
- M Mathematics Given the parent function, f (x) = |2, create a function that would have a Range of (-∞, -3]....
- M Mathematics 1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+11+1+1+1+1+1+1+1+1+1+1+646788746...
- M Mathematics Which expression is equivalent to 4√144a^12b^3?...
- M Mathematics CHER IM GOING TO KILL YOU...
Ответ:
where is the question