User Account

All Pages

The frequency distribution below shows the distribution

Assignment Help Basic Statistics
Reference no: EM13575163

Refer to the following frequency distribution for Questions 1, 2, 3, and 4.

The frequency distribution below shows the distribution for suspended solid concentration (in ppm) in river water of 50 different waters collected in September 2011.

Concentration (ppm)     Frequency
20 - 29                           1
30 - 39                           8
40 - 49                           8
50 - 59                           6
60 - 69                          16
70 - 79                           7
80 - 89                           2
90 - 99                           2

Q1. What percentage of the rivers had suspended solid concentration less that 50?

Q2. Calculate the mean of this frequency distribution.

Q3. In what class interval must the median lie? Explain your answer. (You don't have to find the median)

Q4. Assume that the largest observation in this dataset is 98. Suppose this observation were incorrectly recorded as 988 instead of 98. Will the mean increase, decrease, or remain the same? Will the median increase, decrease or remain the same? Explain your answers. 

Reference no: EM13575163

Questions Cloud

A coin is tossed 4 times let a be the event that the first : a coin is tossed 4 times. let a be the event that the first toss is heads. let b be the event that the third toss is
On january 1 2008 the delta company borrowed 162000 cash : on january 1 2008 the delta company borrowed 162000 cash from the first trust bank by issuing a five-year 8
Beacon company is considering two different mutually : beacon company is considering two different mutually exclusive capital expenditure proposals. project a will cost
Use this information to fill in the following table common : common products has issued its .001 par value stock in two separate financing transactions. transaction 1 five years
The frequency distribution below shows the distribution : refer to the following frequency distribution for questions 1 2 3 and 4.the frequency distribution below shows the
On january 1 2007 granite company had a 4000 balance in the : on january 1 2007 granite company had a 4000 balance in the accounts receivable account and a zero balance in the
Prepare the stockholders equity section of the balance : prepare the stockholders equity section of the balance sheet at december 31 2014.the stockholders equity accounts of
The frequency distribution below shows the distribution for : refer to the following frequency distribution for questions 1 2 3 and 4.the frequency distribution below shows the
The april 30 2009 bank statement for bravo company shows an : the april 30 2009 bank statement for bravo company shows an ending balance of 34451. the unadjusted cash account

Reviews

Write a Review

Basic Statistics Questions & Answers

  Central tendency and measure of varibility

Discuss what is meant by mean, median, mode, variance, and standard deviation for a set of scores. Also mention under what circumstance you would use each of these.

  Confidence interval for tungsten content of mined mineral

Tungsten content of the mined mineral. Further mining of the drift would be justified if the grade is above 1.25% W; can we be 95% confident that this is the case?

  Determine sample size-standard iq points

A standard IQ test has mean of 98 and a standard deviation of 16. We want to be 99% certain that we are 8 IQ points of the true mean. Determine the sample size.

  Find its marginal revenue function

Find its marginal revenue function?

  Find probability customers did not order pastry with drink

If 20 customers were selected at random during one business day, what is the probability that at least 11 of them did not order a pastry with their drink.

  Question on hypothesis testing problems and t test

A sample of 64 observations is selected from a normal population. The sample mean is 215, and the sample standard deviation is 15. Conduct the following test of hypothesis using the .03 significance level.

  Distribution of data population

There're several measures of central tendency. By far the most frequently utilized of these measures is mean of population. Remember that the source of the data that you want to analyze always comes from what is called a population.

  Description of sampling distribution of mean

A person asks, "what do you think is the ideal number of children for a family to have?" The 497 females who responded had a median of 2, mean of 3.02, and a standard deviation of 1.81.

  Drawing column chart and pie chart for grade book

Draw a column chart from grade book.  Use column illustrating students' names; select one of the tests to plot.

  Explaining false positive and false negative

Describe what do you mean by terms 'false positive" and " false negative".

  Correlation between unobserved student traits

Suppose we estimate this model with OLS, and there is a correlation between unobserved student traits (in the error term) with attendance. How does this bias the coefficient of attendance?

  Test the female students higher than males mean test

At the .01 level of significance, is the mean grade of the female students higher than that of the males?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd