Question

In: Statistics and Probability

There is an average of 1.1 weedy species per square metre in a native grassland. What...

There is an average of 1.1 weedy species per square metre in a native grassland. What is the probability that a square metre has at most 3 weedy species?

0.0378

0.0738

0.9005

0.9743

Expert Solution

Solution:

Given:

x = Number of weedy species per square metre in a native grassland follows Poisson distribution with mean

Probability mass function of Poisson distribution is:

Find:
P( at most 3 weedy species per square metre) = .........?

orchestra answered 2 years ago

What is the mass of the metre stick?

A metre stick is balanced on a knife-edge at its centre. When two coins, each of mass 5 g are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the metre stick?

A lecturer wanted to analyze the relationship between land area (X, square metre) in the locality...

A lecturer wanted to analyze the relationship between land area (X, square metre) in the locality of a certain district in one of the state in Malaysia and the land price (Y, RM million), by using nine plots selected randomly. The following statistics were obtained. ∑ ? = 5233; ∑ ? 2 = 3120639;∑ ? = 14.9; ∑ ? 2 = 28.89; ∑ ?? = 9217.8 a) Find the equation of the least squares regression line relating the land area...

1) Species with high FST in their native range tend to spread quickly as invasive species....

1) Species with high FST in their native range tend to spread quickly as invasive species. True or false? 2) A marine biologist collects a sample of 200 adult barnacles and determines their genotypes at a locus with 2 alleles (A, a): 60 AA, 120 Aa and 20 aa. The barnacles randomly mate and 100 of their offspring are sampled and genotyped: 36 AA, 48 Aa, 16 aa. She thinks the change in genotypic frequencies is due to natural selection....

You are researching what you are hoping is a new rare native plant species found in...

You are researching what you are hoping is a new rare native plant species found in a newly-restored habitat. You are anxious to understand what kind of plant it is and help it become established and grow well. Your colleague shares her observations: the plant has a sizeable taproot, leaves with branched veins, and flowers with five petals. When transplanting to a new location, you notice that some of the plants have knobby growths on the roots. The plants with...

a) Explain the difference between "non-native species" and "invasive species". b) Provide three examples of invasive...

a) Explain the difference between "non-native species" and "invasive species". b) Provide three examples of invasive plants in California, provide a brief explanation for your examples including where they are from originally, how they arrived here and became established, and why they are considered invasive.

The average number of mosquitos in a stagnant pond is 80 per square meter with astandard...

The average number of mosquitos in a stagnant pond is 80 per square meter with astandard deviation of 12. If 36 square meters are chosen at random for a mosquitocount, find the probability that the average of those counts is more than 81.6 mosquitosper square meter. Assume that the variable is normally distributed. A)0.3%B)21.2%C)78.8%D)28.8%

Suppose that in past years the average price per square foot for warehouses in the United...

Suppose that in past years the average price per square foot for warehouses in the United States has been $32.28. A national real estate investor wants to determine whether that figure has declined now. The investor hires a researcher who randomly samples 49 warehouses that are for sale across the United States and finds that the mean price per square foot is $31.67, with a sample standard deviation of $1.29. At 5% level of significance, test to see if the...

explain how exotic/ non-native/introduced species contribute to the loss if biodiversity.

What role do native plant species in marshes play in filtering organic waste? (25 marks) Provide...

What role do native plant species in marshes play in filtering organic waste? Provide the name of some common marsh plants, and their role in the marsh Explain how the plants you have chosen work together to filter water such as excess nutrients from agricultural run off.

Ceasar pants standard cost included 0.70 metres of direct material per pants at $3.80 per metre....

Ceasar pants standard cost included 0.70 metres of direct material per pants at $3.80 per metre. Ceasar actually used 32,500 metres of direct material at a cost of $3.75 per metre to produce 50,000 pants. a) Calculate the direct materials price variance: $ Answer b) Is the direct materials price variance favourable or unfavourable? c) Calculate the direct materials quantity variance: $ Answer d) Is the direct materials quantity variance favourable or unfavourable? e) Calculate the total direct materials variance:...