Mathematics, 18.03.2021 01:20, GFJNIN9858
Some researchers have conjectured that stem-pitting disease in peach-tree seedlings might be controlled with weed and soil treatment. An experiment is conducted to compare peach-tree seedling growth when the soil and weeds are treated with one of two herbicides. In a field containing 20 seedlings, 10 are randomly selected throughout the field and assigned to receive herbicide A. The remainder of the seedlings is assigned to receive herbicide B. Soil and weeds for each seedling are treated with the appropriate herbicide, and at the end of the study period, the height in centimeters is recorded for each seedling. The following results are obtained: Herbicide A = 94.5 cm s1 = 10 cm Herbicide B = 109.1 cm s2 = 9 cmWhat is a 90% confidence interval (use the conservative value for the degrees of freedom) for μ2 – μ1?
a. 14.6 ± 7.00
b. 14.6 ± 7.38
c. 14.6 ± 7.80
d. 14.6 ± 9.62
Answers: 3
Mathematics, 21.06.2019 17:40, cifjdhhfdu
Aregular hexagon has sides of 2 feet. what is the area of the hexagon? 12 ft2 12 ft2 24 ft2 6 ft2
Answers: 2
Mathematics, 21.06.2019 19:30, raytaygirl
Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?
Answers: 2
Mathematics, 22.06.2019 00:50, meganwintergirl
4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?
Answers: 3
Mathematics, 22.06.2019 01:00, cldantesBanana
What is the y-intercept of the line with the equation 3x + 4y = 12?
Answers: 1
Some researchers have conjectured that stem-pitting disease in peach-tree seedlings might be control...
Mathematics, 03.02.2020 04:02
Health, 03.02.2020 04:02
Mathematics, 03.02.2020 04:02
Mathematics, 03.02.2020 04:02
Mathematics, 03.02.2020 04:02
Geography, 03.02.2020 04:02