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 Introductory statistics
 Sampling and data
 Definitions of statistics,

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A marriage counselor is interested in the proportion of clients she counsels who stay married.
The course author didn't provide an answer for this question

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Questions & Answers
how can I get a use of statistics of the following areas
physical science
biological sciences
industry
let make a research I will inform u
Nanfuna
what is the relation of state with chemistry
relation with chemistry
Anila
how to solve difficult questions?
ask others with experience
Excel
The thread life of a particular brand of tyre is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 8,300 miles. If the manufacturer warrants the tyre for the first 45,000 miles, what proportion of the tire will need to be replaced under
am tired of notes staff alone.Edify the book mathematically
A production company produces 500 COVID_19 sanitizers and find out that 25% of the sanitizers are defectives if 4 sanitizers are selected at random
1compute the probability of having 0, 1, 2, 3, 4
2compute the probability of having _
A_between 1 and 4
B_between 2 and 4 inclusive
1  (0  31,641%), (1  42,188%), (2  21,094%), (3  4,688%), (4  0,391%)
2  (14 > 25,781%) (24 > 26,1172%)
Luis
what is the basis of z table?
The manager of pharmaceutical company here in kaduna assumes the company's employees are honest. However, there have been many shortage from the cash register lately. There is only one employee who could have taken money from the register during this period. Realizing that the shortage might have resulted from the employee inadvertently giving incorrect change to customers, the employee does not know whether to forget the situation or accuse the employee of theft.
In words, what are the null and alternative hypothesis? Explain your choices.
a) What constitutes a Type I error in this problem?
b) What is a Type II error? Which do you think is more serious? Explain
MUHAMMAD
A box contain three items that are labelled A,B,C.2 items are selected at random (without selecting) from the boxes, list all possible outcome for these experiment, write the sample space
the disadvantage of using stem and leaf graph over others?
frequency is not known
Dexter
A recent study indicated that 30% of the 100 women over age 55 in the study were widows.
a. How large a sample must one take to be 95% confident that the estimate is within 0.05 of
the true proportion of women over 55 who are widows? [4]
b. If no estimate of the sample proportion is available,
critical value is a point on the test distribution that is compared to the test statistic to determine whether to reject the null hypothesis.
New
A college register has received numerous complaints about the online registration
procedure at her college, alleging that the system is slow, confusing, and error prone. She wants
to estimate the proportion of all students at this college who are dissatisfied with the online
registration proc
Linda
A recent study indicated that 30% of the 100 women over age 55 in the study were widows.
a. How large a sample must one take to be 95% confident that the estimate is within 0.05 of
the true proportion of women over 55 who are widows? [4]
b. If no estimate of the sample proportion is Available ho
Linda
Source:
OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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