# statistic is about hypothesis testing (null hypothesis and alternative hypothesis)

statistic is about hypothesis testing (null hypothesis and alternative hypothesis)
Please use excels to solve Question 1. Please attach your answers in the word document as well as upload the original excel work sheet or workbook so that I can edit them if I need to.
Question 1:
According to research of a telephone company, an average time of phone call per household is 86 times in a month. There was a change in phone charge last month. According to most recent research on 100 households, an average time of phone call has decreased to 84 times a month, and its standard deviation is 12. Please verify whether it supports the statement “The reason for the decrease in times of phone call is due to change in phone charge”. Use level of significance 5% to test this hypothesis.
Hint: the answers calculated by hand are the following. This answer provided is for your reference to see if your work is correct or close when you calculate them on excel:
Hypothesis –  H0 : µ = 86
n = 30     x¯   = 25,500    s = 1,700    a= 0.05
C x¯  = 25,000 + 1.699 (using t distribution, freedom is 30-1 = 29)  × 1,700 / v 30
= 25,527.3
Critical Region  x¯    > 25,527.3
x¯ = 25,500 is not included in the critical region (x¯    > 25,527.3)
Therefore; the null hypothesis is not rejected and the alternative hypothesis is not accepted.
The new version of tire has not improved in durability.
Please use excels to perform t-test for Question 3. Please attach your answers in the word document as well as upload the original excel work sheet or workbook so that I can edit them if I need to.
Question 3:
The percentage of supporter for B party who has voting rights in city A has been 32%.  In 1994, there was political change in government and wants to find out whether there was change in percentage of supporter for the party. The research was performed on sample of 200 people and the supporter average mean for the B party was 37%. The sample standard deviation was 48%. Please verify if party B’s support rate has increased significantly.
Hypothesis –  H0 : µ = 0.32
H1: µ > 0.32
n = 200    x¯   = 0.37    s = 0.48    a= 0.05
C x¯  = 0.32 + 1.645× 0.48 / v 200
= 0.376
Critical Region  x¯    > 25,527.3
x¯   = 0.37  is not included in the critical region
Therefore; the null hypothesis is not rejected and the alternative hypothesis is not accepted.
You can not say that party B’s support rate has increased significantly.
Please make sure that all answers are pasted on to word document as well as attach your excel file  (your excel sheet or excel workbook) so I can edit or refer to it. Please set up your excel worksheet so that I can print out the work on excel nicely on A4 paper. The printed out work of excel should be no more than 3 A4 papers. Make sure you label your work (which questions you are working on) on excel so I can find them easily according to questions.
PLACE THIS ORDER OR A SIMILAR ORDER WITH US TODAY AND GET AN AMAZING DISCOUNT ?

# Our Service Charter

1. ### Excellent Quality / 100% Plagiarism-Free

We employ a number of measures to ensure top quality essays. The papers go through a system of quality control prior to delivery. We run plagiarism checks on each paper to ensure that they will be 100% plagiarism-free. So, only clean copies hit customers’ emails. We also never resell the papers completed by our writers. So, once it is checked using a plagiarism checker, the paper will be unique. Speaking of the academic writing standards, we will stick to the assignment brief given by the customer and assign the perfect writer. By saying “the perfect writer” we mean the one having an academic degree in the customer’s study field and positive feedback from other customers.
2. ### Free Revisions

We keep the quality bar of all papers high. But in case you need some extra brilliance to the paper, here’s what to do. First of all, you can choose a top writer. It means that we will assign an expert with a degree in your subject. And secondly, you can rely on our editing services. Our editors will revise your papers, checking whether or not they comply with high standards of academic writing. In addition, editing entails adjusting content if it’s off the topic, adding more sources, refining the language style, and making sure the referencing style is followed.
3. ### Confidentiality / 100% No Disclosure

We make sure that clients’ personal data remains confidential and is not exploited for any purposes beyond those related to our services. We only ask you to provide us with the information that is required to produce the paper according to your writing needs. Please note that the payment info is protected as well. Feel free to refer to the support team for more information about our payment methods. The fact that you used our service is kept secret due to the advanced security standards. So, you can be sure that no one will find out that you got a paper from our writing service.
4. ### Money Back Guarantee

If the writer doesn’t address all the questions on your assignment brief or the delivered paper appears to be off the topic, you can ask for a refund. Or, if it is applicable, you can opt in for free revision within 14-30 days, depending on your paper’s length. The revision or refund request should be sent within 14 days after delivery. The customer gets 100% money-back in case they haven't downloaded the paper. All approved refunds will be returned to the customer’s credit card or Bonus Balance in a form of store credit. Take a note that we will send an extra compensation if the customers goes with a store credit.

We have a support team working 24/7 ready to give your issue concerning the order their immediate attention. If you have any questions about the ordering process, communication with the writer, payment options, feel free to join live chat. Be sure to get a fast response. They can also give you the exact price quote, taking into account the timing, desired academic level of the paper, and the number of pages.

Excellent Quality
Zero Plagiarism
Expert Writers

or