In an area having sandy soil, 60 small trees of a certain type were planted, and...
In an area having sandy soil, 60 small trees of a certain type were planted, and another 60 trees were planted in an area having clay soil. Let X = the number of trees planted in sandy soil that survive 1 year and Y = the number of trees planted in clay soil that survive 1 year. If the probability that a tree planted in sandy soil will survive 1 year is 0.5 and the probability of 1-year survival in clay soil is 0.4, compute an approximation to
P(−6 ≤ X − Y ≤ 6)
(do not bother with the continuity correction). (Round your answer to four decimal places.)
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In an area having sandy soil, 60 small trees of a certain type
were planted, and...
1. In a particular facility, 60% of students are men and 40% are women. In a...
1. In a particular facility, 60% of students are men and 40% are women. In a random sample of 50 students what is the probability that more than half are women? Let the random variable X = number of women in the sample. Assume X has the binomial distribution with n = 50 and p = 0.4. What is the expected value and variance of the random variable X? (6 points) In a random sample of 50 students what is...
8.7.10 Consider a drainage basin having 60 percent soil group A and 40 percent soil group...
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- Question 8 a) A green die is biased so that a 6 is 5 times...
- Question 8 a) A green die is biased so that a 6 is 5 times as likely to appear as any other number, and that the five other outcomes are equally likely. Leaving your answer in exact form, what is the probability of a 6 appearing in a single toss of the green die? 5 points 0.5 b) A red die is biased so that the probability that a 1 appears in a single toss is Let X be...
7. Psychological and social factors can influence the survival of patients with serious diseases. One study...
7. Psychological and social factors can influence the survival of patients with serious diseases. One study compared the relationship between survival of patients with coronary heart disease and pet ownership. Patients were either classified as having a pet or not and whether they survived for 1 year. Based on the data below, is there an association between owning a pet and survival? No need to do the entire significance test, just the parts below. Pet Ownership Patient Status Yes No...
Question 2 [Marks: 15 +10=25] 200kPa of construction stress was applied on top of the soil...
Question 2 [Marks: 15 +10=25] 200kPa of construction stress was applied on top of the soil layers as shown in the figure below. (1) Calculate the settlement in the clay layer due to the construction (minimum of 2 sub layers is to be used). (W) If the soil went through 90% average degree of consolidation in 1 year, calculate the coefficient of consolidation (C.). 个 Sand Y = 20kN/m 4m Water table Clay (over consolidated) y = 16kN/m 100 4m...
Describe in detail a mechanism or explanation for the scenarios above for botany You know as...
Describe in detail a mechanism or explanation for the
scenarios above for botany
You
know as much as i do. I dont understand it either. I need
help.
within the given time? take all the time you need! i need them
before friday is all. i have some guesses as to the answers :
For
a. Do you think the cohesion and adhesion of water in the transport
xylem if the stems still happens when the plant is dead?
For...
Background: Ancient lycophytes were the dominant plants on Earth during the Carboniferous Period, which is named...
Background: Ancient lycophytes were the dominant plants on Earth during the Carboniferous Period, which is named for the coal that formed from those ancient plants that lived 300 million years ago. As humans use fossil fuels such as coal and gas, we release carbon in the form of carbon dioxide (CO2) into the air. Because CO2 traps heat near the surface of the earth, it is known as a greenhouse gas and contributes to climate change. However, carbon is also...
Twelve (12) samples of snowfall were taken from various locations in Uludog on Sunday. The results...
Twelve (12) samples of snowfall were taken from various locations in Uludog on Sunday. The results are shown below in mm) 53 53 50 64 50 54 53 59 59 46 utot 52 60 The minimum is The maximum is The models The median is The first quartile (QI) is The third quartile is (3) The interquartile rango (OR) is If left skewed ontor of right skewed enter 1 The sample means The sample variances The sample standard deviation is...
The amount of cereal that can be poured into a small bowl is normally distributed with a mean of 1.5 ounces and a sta...
The amount of cereal that can be poured into a small bowl is normally distributed with a mean of 1.5 ounces and a standard deviation of 0.3 ounces. For a large bowl the amount poured is normally distributed a mean of 2.5 ounces with a standard deviation of 0.4 ounces. You open a new box of cereal and pour one large and one small bowl. Let Y be the difference of the amount of cereal in the two bowls (Large-S...
IB math studies 1. Ten students were asked for their average grade at the end of their last year...
IB math studies
1. Ten students were asked for their average grade at the end of their last year of high school and their average grade at the end of their last year at university. The results were put into a table as follows: Student High School grade, University grade, y 90 3.2 2.6 75 80 3.0 70 95 3.8 85 90 3.8 2.8 70 95 85 3.0 3.5 10 Total 835 30.4 (a) Given that s, 8.96, sy-0.610 and...
8.7.10 Consider a drainage basin having 60 percent soil group A and 40 percent soil group B. Five years ago, the land use pattern in the basin was 1/2 wooded area with poor cover and 1/2 cultivated land with good conservation treatment. Now, the land use has been changed to 1/3 wooded area, 1/3 cultivated land, and 1/3 commercial and business area. Estimate the increased runoff volume during the dormant season due to the land use change over the past...
- Question 8 a) A green die is biased so that a 6 is 5 times as likely to appear as any other number, and that the five other outcomes are equally likely. Leaving your answer in exact form, what is the probability of a 6 appearing in a single toss of the green die? 5 points 0.5 b) A red die is biased so that the probability that a 1 appears in a single toss is Let X be...
7. Psychological and social factors can influence the survival of patients with serious diseases. One study compared the relationship between survival of patients with coronary heart disease and pet ownership. Patients were either classified as having a pet or not and whether they survived for 1 year. Based on the data below, is there an association between owning a pet and survival? No need to do the entire significance test, just the parts below. Pet Ownership Patient Status Yes No...
Question 2 [Marks: 15 +10=25] 200kPa of construction stress was applied on top of the soil layers as shown in the figure below. (1) Calculate the settlement in the clay layer due to the construction (minimum of 2 sub layers is to be used). (W) If the soil went through 90% average degree of consolidation in 1 year, calculate the coefficient of consolidation (C.). 个 Sand Y = 20kN/m 4m Water table Clay (over consolidated) y = 16kN/m 100 4m...
Describe in detail a mechanism or explanation for the
scenarios above for botany
You
know as much as i do. I dont understand it either. I need
help.
within the given time? take all the time you need! i need them
before friday is all. i have some guesses as to the answers :
For
a. Do you think the cohesion and adhesion of water in the transport
xylem if the stems still happens when the plant is dead?
For...
Twelve (12) samples of snowfall were taken from various locations in Uludog on Sunday. The results are shown below in mm) 53 53 50 64 50 54 53 59 59 46 utot 52 60 The minimum is The maximum is The models The median is The first quartile (QI) is The third quartile is (3) The interquartile rango (OR) is If left skewed ontor of right skewed enter 1 The sample means The sample variances The sample standard deviation is...
The amount of cereal that can be poured into a small bowl is normally distributed with a mean of 1.5 ounces and a standard deviation of 0.3 ounces. For a large bowl the amount poured is normally distributed a mean of 2.5 ounces with a standard deviation of 0.4 ounces. You open a new box of cereal and pour one large and one small bowl. Let Y be the difference of the amount of cereal in the two bowls (Large-S...
IB math studies
1. Ten students were asked for their average grade at the end of their last year of high school and their average grade at the end of their last year at university. The results were put into a table as follows: Student High School grade, University grade, y 90 3.2 2.6 75 80 3.0 70 95 3.8 85 90 3.8 2.8 70 95 85 3.0 3.5 10 Total 835 30.4 (a) Given that s, 8.96, sy-0.610 and...
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