Question

Asked Apr 11, 2019

30 views

A researcher believes that 7% of female smoke cigarets if the researchers correct what is probability that the proportion of smokers in a sample of 445 females were different from population proportion by greater than 3% ? Round to 4 decimal places

Step 1

**Calculation:**

Denote *π* as the true population proportion of female smokers. Hence, *π* = 0.07.

Denote *p* as the sample proportion in a sample of *n* = 445 females.

The sample size is very large. Moreover, *nπ* = 445 ∙ (0.07) = 31.15 > 5; *n *(1 – *π*) = 445 ∙ (1 – 0.07) = 413.85 > 5.

Hence, according to the Central Limit Theorem for proportion, *p* follows the normal distribution, with parameters- mean *µ* ...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: The price to earnings ratio (P/E) is an important tool in financial work. A random sample of 14 larg...

A: (a) Level of significance:Level of significance (α) indicates the probability of rejecting null hypo...

Q: How to determine Estimate the P-value.

A: Introduction:P-value: The P-value is the probability of obtaining a test statistic value as extreme ...

Q: Use one of the following key terms to answer each of the following questions. KEY TERM BANK (separa...

A: Unvariate Analysis : When the analysis of data has only one variable in such cases we use Univariate...

Q: Question 1 The company Phiten makes necklaces that Major League Baseball players commonly wear durin...

A: a) an exogenous variable can be defined as a variable whose value is independent of other variables ...

Q: Zar (1999) describes an experiment in which 13 people with hemophilia were random oTeceve drug B and...

A: NOTE:Hi, the posted question is based on the data of haemophilia, but in part (a) it is asked to fin...

Q: What is a sampling distribution? What do we know about the shape and characteistics of the sampling ...

A: In a statistical investigation, we try to asses a general problem respect to one or more characteris...

Q: Suppose x has a normal distribution with mean μ = 28 and standard deviation σ = 7.Describe the distr...

A: Note:Hi there! Thank you for posting the question. Your question asks about the “distribution of x v...

Q: A student takes a multiple choice test that has 11 questions. Each question has four choices. The st...

A: Identifying the distribution:It is given that the student takes a multiple choice test that has 11 q...

Q: Listed below are brain volumes, measured in cubic centimeters, of twins at birth. Use a 5% significa...

A: Solution:Null and alternative hypotheses:Null hypothesis: µ1 − µ2 = 0 (equivalently µ1 = µ2)Alternat...