Assignment 16. Malaria does not affect the red cell count in the lizards.

Transcription

1 ignmen If he null hypohei i no rejeced ha he wo ample are differen, hen he Type of Error would be ype II Fale. The cieni rejeced baed on a bad calculaion, no baed upon ample ha yielded an exremely large value of he e aiic No. large p-value indicae ha here i no ufficien evidence o uppor ha here i a difference beween he wo reamen for he mean yolic volume for he populaion. I could be ha here wa no ufficien evidence o deermine he difference beween he wo reamen due o he ample ize ued a. umpion. Normal Populaion or large ample The null hypohei i : 1 R 1 0 Malaria doe no affec he red cell coun in he lizard. The alernaive hypohei : 1 R 1 0 Malaria reduce he red cell coun in he lizard.. STEP : = df p - value p - value he p - value o he ignifican 0.05, we do no rejec 0.05 Wih a p-value>0.5, we do no rejec he null hypohei. There i no ufficien evidence o conclude ha malaria paien have a lower red blood coun.

2 b. a. umpion. Normal Populaion or large ample The null hypohei i : 1 R 1 0 Malaria doe no affec he red cell coun in he lizard. The alernaive hypohei : 1 R 1 0 Malaria reduce he red cell coun in he lizard.. STEP : = df p - value p - value he p - value o he ignifican , we do no rejec 0.10 Wih a p-value>0.5, we do no rejec he null hypohei. There i no ufficien evidence o conclude ha malaria paien have a lower red blood coun a.. umpion. Normal Populaion or large ample

3 : 1 R he were o be hypnoized breahing paern i he ame for he in comparion o he conrol group male ha STEP : =0.05 : 1 R he breahing paern i he differen for he were o be hypnoized in comparion o he conrol group male ha SE y y Sep 4 wih df ince , he p - value Sep 5 he p - value o he ignifican he p - value , we rejec 0.05 Sep 6 Wih p - value 0.0, he null hypohei i rejeced. The mean breahing paern beween h e male o be hypnoized b. umpion. Normal Populaion or large ample he conrol group i differen. : 1 R he were o be hypnoized breahing paern i he ame in comparion o he conrol for he group male ha : 1 R he breahing rae i greaer for he male were o be hypnoized in comparion o he conrol group ha STEP : =0.05

4 SE y y Sep 4 wih df ince , he p - value Sep 5 he he p - value o he ignifican p - value , we rejec Sep 6 Since he p - value, he null hypohei i rejeced. The mean breahing rae beween h e male o be hypnoized i greaer h an he conrol group. c. The direcional e i more appropriae ince we are inereed in knowing how he wo group are differen. Thi would only be appropriae if he experimener had prior o he experimen had hypoheized ha he breahing rae would be increaed for he group o be hypnoized : 1 R he ex of he older ibling ha no effec on he weigh of he younger ibling : 1 R he mean weigh of younger mean weigh of younger ibling of female ibling of male i le han he SE y y he p - value wih df ince , he p - value he p - value o he ignifican , we do rejec From hi udy ample ize, he mean birhweigh of children following a male birh i le han he mean birhweigh of hoe following female birh.

5 Supplemenary Exercie 7.S. umpion. Normal Populaion or large ample The null hypohei i : 1 R 1 0 The free calcium concenraion in he blood plaele i he ame for people wih normal blood preure wih high blood preure. The alernaive hypohei : 1 R 1 0 The free calcium concenraion in he blood plaele i differen for people wih normal blood preure for hoe wih high blood preure. STEP : = df p - value he p - value p - value o he ignifican, we rejec Wih a p - value , we do rejec he null hypohei. There i ufficien evidence o conclude ha free calcium concenraion in he blood plaele i differen for people wih normal blood preure hoe wih high blood preure. 7.S.4. I i ill valid becaue of he large ample ize. 7.S.1 a. Fale, ince he confidence inerval give u a range ha we infer cover 1 -.I doe no ell u where he bulk of he daa lie b. True, hi i wha a confidence inerval ell u. c. Fale, he confidence ell u abou he difference beween 1 - ; i doe no ell u abou fuure value for he difference beween y1 y.

6 d. Fale, The confidence inerval i ued o make an inference abou he difference beween no ell u abou individual daa poin uch a he number of calorie in a paricular enree. 1. I doe 7.S.4 a. umpion. Normal Populaion or large ample The null hypohei i : 1 R 1 0 The ue of he eroid roenedione (ro) ha no effec on la pull down rengh. The alernaive hypohei : 1 R 1 0 The ue of he eroid roenedione (ro) ha an effec on la pull down rengh. STEP : = df p - value he p - value o he ignifican 0. p - value , we do no rejec Wih a 0. p - value 0. 4, we do no rejec he null hypohei. There i no ufficien evidence o conclude ha he mean la pull down rengh i differen for hoe ha ook ro hoe ha ook he placebo. b. umpion. Normal Populaion or large ample The null hypohei i : 1 R 1 0 The ue of he eroid roenedione (ro) ha no effec on la pull down rengh.

7 The alernaive hypohei : 1 R 1 0 The ue of he eroid roenedione (ro) ha increae la pull down rengh. STEP : = df p - value 0.5. We expec he e aiic o be poiive from our alernaive hypohei, bu he e aiic i in he oppoie direcion. he p - value o he ignifican p - value , we do no rejec Wih a p - value 0. 5, we do no rejec he null hypohei. There i no ufficien evidence o conclude ha he mean la pull down rengh i improved for hoe ha ook ro over hoe ha ook he placebo.